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DESCRIPTION JP2005167975

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DESCRIPTION JP2005167975
PROBLEM TO BE SOLVED: To properly hear the most necessary sound for the user. SOLUTION:
For example, when a reproduction request for voice guidance data is generated from the
navigation ECU 4 while music data is being reproduced and music is being output, the sound
field control device 2 is configured to prioritize the command input from the audio ECU 3 The
immediacy is compared with the priority and immediacy of the command input from the
navigation ECU 4, and the priority and immediacy of the voice guidance data reproduction
request is higher than the priority and immediacy of the music data reproduction request. The
schedule is determined to give priority to the output of the audio guidance over the output of the
music, and the sound field is controlled by adjusting the sound field characteristics and the
output volume so that the audio guidance is heard prior to the music. [Selected figure] Figure 1
Sound field control device, sound field control system, in-vehicle device and in-vehicle system
[0001]
The present invention relates to a sound field control device for controlling a sound field in a
vehicle compartment, a sound field control system including a sound field control device and an
in-vehicle device or in-vehicle system, an in-vehicle device configured to be mountable in a
vehicle, and an in-vehicle system. .
[0002]
As a system which manages the sound in a vehicle interior, there is a thing shown, for example in
patent documents 1.
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1
Japanese Patent Application Laid-Open No. 7-159190
[0003]
In the passenger compartment, for example, various sounds such as music output from an audio
device, voice guidance for route guidance output from a navigation device, and warning sound
output from a collision prevention device coexist. However, in the prior art, the music, the voice
guidance and the warning sound are not mutually linked and output, but are each output
independently. For example, the music is output at an extremely high volume. Even if voice
guidance or warning sounds are output during the process, the output voice guidance or warning
sounds may be buried in the music, and the user may not be able to properly hear the voice
guidance or warning sounds. is there.
[0004]
The present invention has been made in view of the above-described circumstances, and its
object is, for example, a plurality of music output from an audio device, audio guidance output
from a navigation device, and a warning sound output from a collision prevention device. It is an
object of the present invention to provide a sound field control device, a sound field control
system, an in-vehicle device, and an in-vehicle system which can make the user properly hear the
most necessary sound when the sounds of B and C coexist.
[0005]
According to the sound field control device described in claim 1, when the command is input
from the in-vehicle device or the in-vehicle system mounted on the vehicle, the state management
means determines the in-vehicle device or the in-vehicle system The priority and immediacy
related to the sound output are extracted to manage the state of the in-vehicle device or invehicle system, and the schedule related to the sound output of the in-vehicle device or in-vehicle
system is determined based on the extracted priority or immediacy Do.
Then, the sound field control means controls the sound field by adjusting the sound field
characteristics and the output sound volume of the original sound or sound data outputted from
the in-vehicle device or the in-vehicle system based on the schedule determined by the state
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management means.
[0006]
Thereby, if, for example, the music output from the audio device and the audio guidance output
from the navigation device coexist, from the navigation device, the music data is reproduced by
the audio device and the music is output. When a request for playback of voice guidance data
occurs, the priority or immediateness of the command input from the audio device is compared
with the priority or immediateness of the command input from the navigation device, and the
playback request for voice guidance data is If the priority or immediacy is higher than the
priority or immediacy of the music data playback request, the schedule is determined so that the
audio guidance output is prioritized over the music output, and the audio guidance is prioritized
over the music Control the sound field by adjusting the sound field characteristics and output
volume to be heard Taken most needed sounds, that is, if this case, it is possible to heard suitably
voice guidance.
[0007]
Also, for example, when music output from an audio device and a warning sound output from a
collision prevention device coexist, the collision prevention device is in the middle of music data
being reproduced by the audio device and music being output. When a request to play back
warning sound data occurs, the priority and immediacy of the command input from the audio
device are compared with the priority and immediacy of the command input from the collision
prevention device to reproduce the warning sound data. If the priority or immediacy of the
request is higher than the priority or immediacy of the reproduction request of music data, the
schedule is determined so that the warning sound output is prioritized over the music output,
and the warning sound is prioritized over the music The sound field characteristics and the
output volume are adjusted to control the sound field so that the user can hear the sound, and
the sound most necessary for the user, that is, in this case, the warning sound is properly heard.
It is possible to et al.
[0008]
According to the second aspect of the present invention, the sound field control means controls
the sound field by providing directivity to the original sound or the sound data.
Thus, for example, in the case of outputting voice guidance such as "Turn right at the intersection
500 meters ahead", the direction in which the voice guidance can be heard by giving directivity
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so that the voice guidance can be heard from the right side of the user. Can inform the user of
the traveling direction.
Also, for example, in the case of outputting a warning sound, by providing directivity so that the
warning sound can be heard from the direction in which the vehicle may come in contact with
the obstacle, the vehicle can receive the warning sound by the direction. The user can be notified
of the direction in which there is a risk of contact with the obstacle.
[0009]
According to the sound field control device described in claim 3, the sound field control means
includes the sound field characteristics and the output sound volume of the original sound or
sound data outputted from the in-vehicle device or in-vehicle system including the recognition
result by the road noise recognition means. Adjust the sound field to control. As a result, even
when road noise is generated, by controlling the sound field in consideration of the road noise,
the user can properly hear the most necessary sound while suppressing the influence of the road
noise. be able to.
[0010]
According to the sound field control device of the fourth aspect, the sound field control means
includes the recognition result by the parking and stopping state recognition means for
recognizing whether the vehicle is in the parking and stopping state or not from the in-vehicle
device or the in-vehicle system Control the sound field by adjusting the sound field
characteristics and output volume of the output original sound or sound data. In this way, by
controlling the sound field in consideration of whether or not the vehicle is in the parked state
(for example, whether it is parked or traveling, etc.), it is related to whether the vehicle is in the
parked state or not. Instead, the user can properly hear the most necessary sound.
[0011]
According to the sound field control device described in claim 5, the sound field control means is
a sound output device recognition means that recognizes the type of the sound output device
that outputs the output sound of which the sound field is controlled by the sound field control
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device. The sound field is controlled by adjusting the sound field characteristics and output
volume of the original sound or sound data output from the in-vehicle device or in-vehicle system
including the recognition result. Thus, by controlling the sound field in consideration of the type
of the sound output device (for example, whether it is a stationary speaker or a headphone type
speaker), the user can receive the most from the user regardless of the type of the sound output
device. You can hear the necessary sounds properly.
[0012]
According to the sound field control system described in claim 6, the in-vehicle device or the invehicle system outputs a command in which the priority and the immediacy related to the sound
output of the own device are stored to the sound field control device The device controls the
sound field by adjusting the sound field characteristic and output volume of the original sound or
sound data output sound output from the in-vehicle apparatus or the in-vehicle system. By this, it
is possible to obtain the same operation and effect as those described in claim 1 described above,
that is, it is possible to appropriately hear the most necessary sound for the user.
[0013]
According to the sound field control system described in claim 7, the sound output device
comprises at least two speakers which can be disposed in front of the driver's seat, and the sound
field control device is an original sound providing information necessary for driving.
Alternatively, the sound field is controlled by adjusting the sound field characteristics and output
volume of the original sound or sound data output from the in-vehicle device or in-vehicle system
capable of outputting sound data, and the sound output device provides information necessary
for driving. An output sound whose sound field is controlled by the sound field control device of
the original sound or sound data output from the in-vehicle apparatus or the in-vehicle system
capable of outputting the original sound or sound data is output. Thus, it is possible to control
the sound field of the original sound or sound data providing information necessary for driving
such as, for example, voice guidance and warning sound, and the driver's seat can output the
original sound or sound data whose sound field is controlled. The output sound can be output
from at least two speakers which can be arranged at the front of the speaker, and an output
sound providing information necessary for driving can be properly heard. Further, in this case,
by arranging at least two speakers in front of the driver's seat, sound image localization effective
for the user (driver) can be realized.
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[0014]
According to the sound field control system described in claim 8, the other sound output device
comprises at least one speaker which can be disposed at a site other than the front part of the
driver's seat, and the other sound output device is necessary for driving. Output sound that is not
controlled by the sound field control device of the original sound or sound data output from the
in-vehicle device or the in-vehicle system that can output the original sound or sound data that
provides the information without the sound. This makes it possible to prevent in advance the
control of the sound field of the original sound or sound data providing information not
necessary for driving such as music etc. in advance, and to prevent the unnecessary control of
the sound field in advance. be able to.
[0015]
First Embodiment Hereinafter, a first embodiment of the present invention will be described with
reference to FIGS. 1 to 7. FIG. 1 schematically shows the overall configuration of a sound field
control system. In the sound field control system 1, the sound field control device 2 is configured
by connecting the audio ECU 3, the navigation ECU 4, the air conditioner ECU 5, the travel
control ECU 6, the driving support ECU 7, the speech determination ECU 8 and the
communication ECU 9 through an in-vehicle LAN (not shown) It is done. These in-vehicle ECUs 3
to 9 correspond to the in-vehicle devices in the present invention, and output original sound or
sound data to the sound field control device 2 and also store the priority and immediacy related
to their own sound output ( Message) is also output to the sound field control device 2. Further,
the communication ECU 9 is configured to be able to connect the mobile phone 10.
[0016]
The sound field control device 2 includes a state management unit 11 (a state management unit
according to the present invention), a road noise recognition unit 12 (a road noise recognition
unit according to the present invention), and a parking / parking state recognition unit 13 (a
parking / stop according to the present invention). It comprises a state recognition means), a
sound output device recognition unit 14 (sound output device recognition means in the present
invention), and a sound field control unit 15 (sound field control means in the present invention).
[0017]
The state management unit 11 receives original sound, sound data, and commands from the in-
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vehicle ECUs 3 to 9, and when a command is input from the in-vehicle ECUs 3 to 9, priority and
immediacy are determined from the input commands. Is extracted to manage the states of the invehicle ECUs 3 to 9, and the schedule concerning the sound output of the in-vehicle ECUs 3 to 9
is determined based on the extracted priority and immediacy.
[0018]
The road noise recognition unit 12 recognizes the road noise collected by the road noise
recognition microphone 16, and outputs the recognition result to the sound field control unit 15.
The parked state recognition unit 13 determines whether the vehicle is parked or not (for
example, parked or traveling, etc.) based on, for example, a vehicle speed signal input from a
vehicle speed sensor (not shown) or the like. It recognizes and outputs the recognition result to
the sound field control unit 15.
The sound output device recognition unit 14 recognizes the type of the sound output device 17
(for example, whether it is a stationary speaker or a headphone speaker), and outputs the
recognition result to the sound field control unit 15.
[0019]
The sound field control unit 15 includes an output sound balance determination unit 18, a sound
data addition unit 19, a sound field characteristic addition unit 20, and an output volume
adjustment unit 21. The output sound balance determination unit 18 determines the schedule
related to the sound output determined by the state management unit 11, the recognition result
input from the road noise recognition unit 12, the recognition result input from the parking /
parking state recognition unit 13, and the sound output device The overall balance of the output
sound is determined based on the recognition result input from the recognition unit 14, and the
sound field characteristic and the output volume are adjusted.
[0020]
The sound data addition unit 19 exchanges original sound or sound data with the output sound
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balance determination unit 18, and adds sound data to the original sound. The sound field
characteristic adding unit 20 exchanges original sound and sound field characteristic data with
the output sound balance determining unit 18, and adds sound field characteristic data to the
original sound. The output sound volume adjustment unit 21 exchanges original sound or sound
data with the output sound balance determination unit 18, and adjusts the output sound volume
of the original sound or sound data.
[0021]
FIG. 2 shows that the above-described sound field control device 2 is chipped, that is,
substantially the entire functional block corresponding to the sound field control device 2 is
integrally incorporated into an audio device as a sound field control chip (see FIG. The built-in
state is shown schematically. Specifically, the audio device 31 includes a CD decoder 32 for
reproducing music data recorded on a CD, an MD decoder 33 for reproducing music data
recorded on an MD, and music recorded on a DVD. DVD decoder 34 for reproducing data,
switching switch 35 for switching the path of music data reproduced by decoders 32 to 34, audio
processor 36 for controlling the overall operation of audio device 31, sound field control chip 37,
analog digital data It comprises a D / A converter 38 for converting data, an amplifier 39 for
amplifying analog data, and a speaker 40 for outputting an output sound.
[0022]
The sound field control chip 37 includes a state management module 41, a road noise
recognition module 42, and a state management module 41 corresponding to each functional
block of the state management unit 11, the road noise recognition unit 12 and the sound field
control unit 15 in the sound field control device 2 described above. The sound field control
module 43 includes the output sound balance determination unit 18, the sound data addition
unit 19, the sound field characteristic addition unit 20, and the output volume in the abovedescribed sound field control unit 15. An output sound balance determination module 44, a
sound data addition module 45, a sound field characteristic addition module 46, and an output
volume adjustment module 47 corresponding to each functional block of the adjustment unit 21
are configured.
[0023]
The audio processor 36 outputs the original sound and the command to the sound field control
chip 37.
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The navigation device interface unit 48 has an interface function between the navigation device
49 and the sound field control chip 37. When sound data and commands are input from the
navigation device 49, the input sound data and commands are input. Are output to the sound
field control chip 37. The sensor control ECU interface unit 50 has an interface function between
the sensor control ECU 51 and the sound field control chip 37. When sound data and a command
are input from the sensor control ECU 51, the input sound data and The command is output to
the sound field control chip 37. In this case, the sensor control ECU 51 includes a right front
corner sensor 52, a right rear corner sensor 53, a left front corner sensor 54, and a left rear
corner sensor disposed on the right front, right rear, left front and left rear of the vehicle. 55 is
connected.
[0024]
FIG. 3 schematically shows an aspect in which the audio device 31, the navigation device 49, the
sensor control ECU 51, and the corner sensors 52 to 55 described above are mounted on a
vehicle. In this case, the navigation device 49 is disposed at a position where it can be operated
by the user in the vehicle interior together with the audio device 31 in a state of being connected
to the audio device 31 through the communication cable 56. The sensor control ECU 51 is
disposed outside the vehicle in a state of being connected to the audio device 31 through the
communication cable 57. Furthermore, each corner sensor 52 to 55 is connected to the sensor
control ECU 51 through the communication cable 58 to 61.
[0025]
Next, the operation of the above configuration will be described with reference to FIGS. 4 to 7.
Here, in the configuration shown in FIG. 2, (1) when a reproduction request for voice guidance
data is generated while music is being output (2) a reproduction request for warning sound data
is being generated while music is being output The case of occurrence will be described as an
example.
[0026]
(1) When a request for playing back voice guidance data is generated while music is being output
First, when "a request for playing back voice guidance data is generated while music is being
output", FIG. 4 and FIG. This will be described with reference to FIG.
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[0027]
First, in the sound field control chip 37, when the reproduction request of music data is
generated by the audio processor 36 (step S1) and the original sound and the command are
input from the audio processor 36 to the state management module 41, Is recognized as state
management (step S2), and music is output from the speaker 40.
[0028]
Here, in the sound field control chip 37, a request for reproduction of voice guidance data is
generated in the navigation device 49 (step S3), and sound data and commands are input to the
state management module 41 from the navigation device 49 through the navigation device
interface unit 48. Then, the priority and immediacy are extracted from the input command, and
the priority and immediacy degree extracted from the command input from the audio processor
36 earlier than this are input from the navigation device 49. The priority and the immediacy
extracted from the command are compared, and it is determined from which command the
priority and the immediacy extracted are high (step S4).
[0029]
Then, the sound field control chip 37 has the priority and the immediacy extracted from the
command input from the navigation device 49 as “A rank”, and the priority and the priority
extracted from the command input from the audio processor 36 The immediacy is "B rank", that
is, the priority or immediacy extracted from the command input from the navigation device 49 is
higher than the priority or immediacy extracted from the command input from the audio
processor 36 For example, the schedule is determined so that the voice guidance has priority
over the music, and the sound field control module 43 controls the sound field (step S5).
[0030]
Specifically, the sound field control chip 37 reduces the volume of the music so that the volume
of the voice guidance is relatively larger than the volume of the music so that the voice guidance
is not buried in the music, or the voice guidance Or giving different directivity to music (applying
Circle SurroundTM technology) or temporarily stopping playback of music data.
Also, in this case, the sound field control chip 37 may give directivity to the voice guidance
according to the contents of the voice guidance, and if the voice guidance is such as prompting a
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right turn, the voice from the right side of the user It may be possible to hear the guidance.
Furthermore, in this case, the sound field control chip 37 analyzes the recognition result input
from the road noise recognition module 42 to identify the degree of the road noise, so that the
sound field is not buried in the road noise. You may control
[0031]
Then, the sound field control chip 37 recognizes that the music data is being reproduced and the
audio guidance data is being reproduced as state management (step S6), and causes the speaker
40 to output the music and the audio guidance.
[0032]
By the series of processes described above, as shown in FIG. 5, when the vehicle A passes a point
"500 m" from the intersection to be turned right, for example, while the music is being output,
the music volume is reduced. The voice guidance "A right turn at the intersection 500 m ahead"
is output, that is, the voice guidance is output without being buried in the music, and the voice
guidance can be properly heard.
[0033]
(2) When a request for reproducing warning sound data is generated while music is being output
Next, "when a request for reproducing warning sound data is generated while music is being
output" will be described with reference to FIGS. This will be described with reference to FIG.
[0034]
In this case, in the sound field control chip 37, a request for reproducing warning sound data is
generated in the sensor control ECU 51 (step S13), and sound data and commands are sent to the
state management module 41 from the sensor control ECU 51 through the sensor control ECU
interface unit 50. When it is input, the priority and the immediacy are extracted from the input
command, and the priority and the immediacy degree extracted from the command input from
the audio processor 36 earlier than this are input from the sensor control ECU 51. The priority
and the immediacy extracted from the command are compared, and it is determined from which
command the priority and the immediacy extracted are high (step S14).
[0035]
The sound field control chip 37 warns if the priority or immediacy extracted from the command
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input from the sensor control ECU 51 is higher than the priority or immediacy extracted from the
command input from the audio processor 36. The schedule is determined so that the sound is
prioritized over the music, and the sound field control module 43 controls the sound field (step
S15).
[0036]
Specifically, the sound field control chip 37 reduces the volume of the music so that the volume
of the warning sound is relatively larger than the volume of the music so that the warning sound
is not buried in the music, or the warning sound Or giving different directivity to music (applying
Circle SurroundTM technology) or temporarily stopping playback of music data.
Also in this case, the sound field control chip 37 may give directivity to the warning sound
according to the content of the warning sound. For example, in the case of the warning sound
from the left rear corner sensor 55, the left rear of the user You may hear a warning sound from.
[0037]
Then, the sound field control chip 37 recognizes that the music data is being reproduced and the
warning sound data is being reproduced as state management (step S16), and the speaker 40
outputs the music and the warning sound.
[0038]
According to the series of processes described above, as shown in FIG. 7, if there is a risk that the
vehicle A contacts, for example, the obstacle B at the left rear while music is being output, the
volume of the music decreases. After that, a warning sound "pipi pi" is output, that is, the warning
sound is output without being buried in the music, and the warning sound can be properly heard.
[0039]
By the way, in the configuration described above, if the configuration includes the parked /
parked state recognition module corresponding to the functional block of the parked / parked
state recognition unit 13 shown in FIG. 1, the vehicle based on the recognition result of the
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parked / parked state recognition module The sound field may be controlled so that the voice
guidance and the warning sound can be properly heard depending on whether or not the vehicle
is parked or not by identifying whether or not the vehicle is parked or not.
Also, in the configuration provided with a sound output device recognition module corresponding
to the functional block of the sound output device recognition unit 14 shown in FIG. 1, the type
of sound output device is determined based on the recognition result of the sound output device
recognition module By identifying the sound field, the sound field may be controlled so that the
voice guidance or the warning sound can be properly heard according to the type of the sound
output device.
[0040]
In addition, when a request for reproducing warning sound data occurs while both music and
voice guidance are being output, the warning sound is displayed if the priority and the
immediacy extracted from the command of the warning sound data are the highest. The sound
field may be controlled so as to be prioritized over music and voice guidance, and when a request
for playing back voice guidance data occurs while both music and a warning sound are being
output, voice guidance If the priority or immediacy extracted from the command of the data is
the highest, the sound field may be controlled so that the audio guidance is prioritized over the
music and the warning sound.
Further, the priority and the immediacy stored in the command may be arbitrarily set by the user
according to the content of the voice guidance and the content of the warning, and the navigation
device 49 and the sensor control ECU 51 are manufactured. It may be set centrally by the
manufacturer.
[0041]
As described above, according to the first embodiment, in the sound field control chip 37, for
example, while the music data is being reproduced and the music is being output, the navigation
device 49 generates a reproduction request of the voice guidance data. Or when a request to
reproduce warning sound data is generated from the sensor control ECU 51, the priority or
immediacy of the command input from the audio processor 36, the command input from the
navigation device 49, or the input from the sensor control ECU 51. If the priority or immediacy of
the voice guidance data or warning sound data playback request is higher than the priority or
immediacy of the music data playback request, the voice guidance or warning sound is
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compared. Schedule to prioritize data output over music output, and provide voice guidance and
alerts By adjusting the sound field characteristics and the output volume to control the sound
field so that it can be heard prior to music, the user can properly hear the voice guidance and the
warning sound which is the most necessary sound for the user. You can
[0042]
Further, if the sound field control chip 37 is configured to control the sound field by giving
directivity to the output sound, for example, the user can be notified of the traveling direction by
the direction in which the audio guidance can be heard or the warning sound The audible
direction can inform the user of a direction in which the vehicle may come in contact with the
obstacle.
[0043]
Further, since the sound field control chip 37 is configured to control the sound field including
the recognition result by the road noise recognition module 42, even in the state where the road
noise is generated, the road noise is taken into consideration. By controlling the sound field, the
user can properly hear the most necessary sound while suppressing the influence of road noise.
[0044]
Further, in the sound field control chip 37, the recognition result by the parking / stop state
recognition module that recognizes whether the vehicle is in the parked / parked state or the
recognition result by the sound output device recognition module that recognizes the type of the
sound output device 17 is included. If it is configured to control the sound field, whether the
vehicle is in the parked state by controlling the sound field in consideration of whether the
vehicle is in the parked state or not and the type of the sound output device 17 Regardless of the
type of sound output device, regardless of the type of sound output device, the user can properly
hear the most necessary sound.
[0045]
Second Embodiment Next, a second embodiment of the present invention will be described with
reference to FIG. 8 to FIG.
The second embodiment is not the aspect in which the in-vehicle ECU is connected to the sound
field control apparatus, but the aspect in which the in-vehicle system is connected to the sound
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field control apparatus is described in the first embodiment. It is different from what you did.
That is, in the second embodiment, in the sound field control system 101, the sound field control
device 102 includes a vehicle monitoring system 103, a safe driving support system 104, an
outside sound monitoring system 105, a vehicle surroundings monitoring system 106, a
communication system 107, A navigation system 108 and an audio system 109 are connected
via an in-vehicle LAN.
[0046]
These in-vehicle systems 103 to 109 output the original sound or the sound data to the sound
field control device 102, and also the command (message) in which the priority and the
immediacy related to the sound output of the own device are stored. Output to
Further, in this case, the in-vehicle systems 103 to 108 excluding the audio system 109 among
the in-vehicle systems 103 to 109 are in-vehicle systems for outputting original sound or sound
data (related to driving) providing information necessary for driving. The audio system 109 is an
in-vehicle system that outputs original sound or sound data (not related to driving) which
provides information not necessary for driving.
[0047]
The sound field control device 102 is substantially the same as the state management unit 110
having substantially the same function as the state management unit 11 described in the first
embodiment, and the sound field control unit 15 described in the first embodiment. A sound field
control unit 111 having the same function, a first amplifier 112 for amplifying an output sound
output from a first sound output line, and a second for amplifying an output sound output from a
second sound output line It is configured to include an amplifier 113.
[0048]
The first speaker 114 and the second speaker 115 are disposed in the vehicle compartment and
arranged side by side at the front of the driver's seat.
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The third speaker 116 is disposed in the vehicle compartment and disposed on the right side of
the driver's seat, and the fourth speaker 117 is disposed in the vehicle compartment and
disposed on the left side of the passenger seat.
Further, the fifth speaker 118 is in the vehicle compartment and disposed on the right side of the
right rear seat, and the sixth speaker 119 is disposed in the vehicle compartment and disposed
on the left side of the left rear seat.
In this case, the first speaker 114 and the second speaker 115 realize sound image localization
effective for the user (driver) by, for example, the time difference between the output sounds
reaching the user's ears.
[0049]
The in-vehicle systems 103 to 108 excluding the audio system 109 among the in-vehicle systems
103 to 109 are connected to the first speaker 114 and the second speaker 115 via the sound
field control device 102.
Therefore, the original sound or sound data providing the information necessary for driving
output from the in-vehicle systems 103 to 108 is subjected to sound field control by the sound
field control device 102 and output sound from the first speaker 114 and the second speaker
115 Is output as
[0050]
On the other hand, the audio system 109 is connected to the third speaker 116 to the sixth
speaker 119 via the third amplifier 120 without passing through the sound field control device
102.
Therefore, the original sound or sound data for providing information not necessary for driving
output from the audio system 109 is output from the third speaker 116 to the sixth speaker 119
without being subjected to sound field control by the sound field control device 102. It is output
as a sound.
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That is, the first speaker 114 and the second speaker 115 correspond to a sound output device
that outputs an output sound for providing information necessary for driving according to the
present invention, and the third speaker 116 to the sixth speaker 119 Is equivalent to another
sound output device that outputs an output sound that provides information that is not necessary
for operation in the present invention.
In this case, the sound field control apparatus 102 can adjust only the gain of the third amplifier
120, that is, only the volume of the output sound output from the third speaker 116 to the sixth
speaker 119. It has become adjustable.
[0051]
The vehicle monitoring system 103 monitors whether or not an abnormal situation has occurred
in the vehicle, and when it is detected that an abnormal situation has occurred in the vehicle,
sound field control of original sound or sound data necessary for notifying the user of that fact.
Output to the device 102.
The safe driving support system 104 detects, for example, the distance of the vehicle to the
preceding vehicle traveling in front of the own vehicle, and monitors whether the vehicle can
perform safe driving, and the vehicle can not perform safe driving. If the detection is detected,
the original sound or sound data necessary for notifying the user of that is output to the sound
field control device 102.
[0052]
The external sound monitoring system 105 is configured by any of the following in the present
embodiment. That is, as one configuration example, as shown in FIG. 9A, the external sound
monitoring system 105 is configured to include an information processing unit 105a,
microphones 105b to 105d, and an alarm sound sampling table 105e. In this case, the
microphones 105b to 105d are mounted on a vehicle, for example, so that they are each located
at the apex of a triangle, and collect sounds outside the vehicle. The information processing unit
105a determines the correlation between the sound data outside the vehicle collected by the
microphones 105b to 105d and the alarm sound sampling table 105e, and detects that the
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correlation coefficient is equal to or more than the threshold value, the microphones 105b to
105d. The original sound or sound data of the alarm sound related to the sound collected by the
above is output to the sound field control device 102. In this case, the vehicle outside sound
monitoring system 105 is not limited to the configuration for outputting the original sound or
sound data of the alarm sound to the sound field control device 102, for example, the original
sound or sound data of the alarm message such as "ambulance approaching". May be output to
the sound field control device 102.
[0053]
Further, as another configuration example, the external sound monitoring system 105 may be
configured to include an information processing unit 105 f, a communication unit 105 g, and a
vehicle sampling table 105 h, as shown in FIG. 9B. In this case, the communication unit 105g
receives a wireless signal transmitted from an emergency vehicle, a level crossing, or the like.
The information processing unit 105 f analyzes the wireless signal transmitted to the
communication unit 105 g from the emergency vehicle or crossing or the like, determines the
correlation with the vehicle sampling table, and the original sound indicating the presence of the
emergency vehicle or crossing or the like according to the determination result. Sound data is
output to the sound field control device 102.
[0054]
The vehicle periphery monitoring system 106 monitors the periphery of the vehicle, and when it
detects that an abnormal situation has occurred around the vehicle, outputs necessary sound or
sound data to the sound field control device 102 to notify the user of that. The communication
system 107 receives a notification signal from outside the vehicle, and outputs original sound or
sound data of the received notification signal to the sound field control device 102.
[0055]
The navigation system 108 is configured as follows in the present embodiment. That is, as shown
in FIG. 10, the navigation system 108 includes an information processing unit 108a, a map
database 108b, a search database 108c, a guidance information database 108d, a display device
108e, a GPS receiver 108f, a vehicle speed sensor 108g, a gyroscope 108h and A geomagnetic
sensor 108i is provided.
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[0056]
The audio system 109 includes an audio reproducing apparatus such as a radio, a cassette tape
recorder, a CD, an MD, a DVD, and a television, and an apparatus for adjusting the amplitude and
waveform of audio such as volume and equalizer. Original sound or sound data is output to the
third speaker 116 to the sixth speaker 119 via the third amplifier 120.
[0057]
Next, the operation of the above-described configuration will be described with reference to FIG.
Here, FIG. 11 shows, as a flowchart, processing performed by the sound field control device 102
when the in-vehicle systems 103 to 108 excluding the audio system 109 among the on-vehicle
systems 103 to 109 output a command to the sound field control device 102. ing.
[0058]
When a command is input from any of in-vehicle systems 103 to 108 ("YES" in step S101), sound
field control apparatus 102 is reproducing original sound or sound data of any in-vehicle system
at that time. It is determined whether or not (step S102). When sound field control apparatus
102 detects that the original sound or sound data of any of the in-vehicle systems is being
reproduced at that time ("YES" in step S102), the original sound or sound data is being
reproduced. It is determined whether a certain on-vehicle system is an on-board system
outputting original sound or sound data providing information necessary for driving or an onboard system outputting original sound or sound data providing information not necessary for
driving (step S103).
[0059]
Here, when it is detected that the sound field control device 102 is an in-vehicle system
outputting original sound or sound data for providing information necessary for driving, the invehicle system reproducing the original sound or sound data (step S103). (YES) and compare the
priority and the immediacy between the in-vehicle system which has output the command and
the in-vehicle system which is reproducing the original sound or sound data at that time (step
S104).
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[0060]
When the sound field control device 102 detects that the priority or immediacy of the in-vehicle
system which has output the command is higher than the priority or immediacy of the in-vehicle
system in which the original sound or sound data is being reproduced (step S105) Yes, determine
the schedule so that priority is given to the output sound from the in-vehicle system that has
output the command, and preferentially output the output sound of the original sound or sound
data output from the in-vehicle system that has output the command (Step S106).
[0061]
On the other hand, when the sound field control device 102 detects that the priority or
immediacy of the in-vehicle system which has output the command is lower than the priority or
immediacy of the in-vehicle system in which the original sound or sound data is being
reproduced In step S105, the schedule is determined such that the output sound from the invehicle system reproducing the original sound or sound data is prioritized, and is output from the
in-vehicle system reproducing the original sound or sound data The output sound of the original
sound or sound data is output with priority (step S107).
[0062]
Further, when it is detected that the sound field control device 102 is an on-vehicle system
outputting original sound or sound data providing information that the on-vehicle system
reproducing the original sound or sound data does not need to drive (at step S103) "NO"), the
output sound of the original sound or sound data output from the in-vehicle system which has
output the command, and the output sound of the original sound or sound data output from the
in-vehicle system reproducing the original sound or sound data Adjust (for example, reduce the
volume) (step S108).
When sound field control apparatus 102 detects that the original sound or sound data of any invehicle system is not being reproduced ("NO" in step S102), the original sound or sound data
output from the in-vehicle system which has output the command. The output sound of is output
(step S109).
[0063]
As described above, according to the second embodiment, in the sound field control system 101,
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the original sound or sound data of any in-vehicle system is being reproduced while the original
sound or sound of any other in-vehicle system is being reproduced. When a data reproduction
request is generated, the priority or immediacy of the command input from the in-vehicle system
for which the reproduction request of the original sound or the sound data has been generated,
the priority or immediacy of the command input from the in-vehicle system being reproduced To
control the sound field, and in this case as well, the same operation and effect as those described
in the first embodiment can be obtained, that is, with the most necessary sound for the user. You
can hear certain voice guidance and warning sounds properly.
[0064]
Third Embodiment Next, a third embodiment of the present invention will be described with
reference to FIG.
The third embodiment is not an aspect in which the sound field control device is disposed
separately from the in-vehicle system, but is an aspect in which the sound field control device is
incorporated as a part of the in-vehicle system. It differs from that described in the two
embodiments.
That is, in the third embodiment, in the sound field control system 201, the sound field control
device 202 is incorporated as a part of the function of the navigation system 203, and the vehicle
monitoring system 103, the safe driving support system 104, and the outside sound A
monitoring system 105, a vehicle periphery monitoring system 106, a communication system
107, and an audio system 109 are connected via an in-vehicle LAN.
In this case, the sound field control device 202 performs the same process as the process
performed by the sound field control device 102 described in the second embodiment.
[0065]
As described above, according to the third embodiment, in the sound field control system 201,
the original sound or sound data of any in-vehicle system is being reproduced while the original
sound or sound of any other in-vehicle system is being reproduced. When a data reproduction
request occurs, the priority and immediacy of the command input from the system where the
original sound or sound data reproduction request occurred, and the priority and immediacy of
the command input from the in-vehicle system being reproduced Since the control is made to
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control the sound field in comparison, in this case also, the same operation and effect as those
described in the first embodiment and the second embodiment described above can be obtained,
and it is most necessary for the user You can hear voice guidance and warning sounds that are
natural sounds properly.
[0066]
Other Embodiments The present invention is not limited to the above-described embodiments,
and can be modified or expanded as follows.
In the first embodiment, the on-vehicle ECU may be of another type. Further, the functional block
corresponding to the sound field control device is not limited to the structure integrally
incorporated in the audio device as a sound field control chip, but the functional block
corresponding to the sound field control device is a navigation device or other devices as a sound
field control chip May be integrated into one. In the second and third embodiments, the invehicle system may be of another type. Further, the number and arrangement of the speakers
may be another number and arrangement, and the configuration of the in-vehicle system such as
the external sound monitoring system and the navigation system may be other configurations.
[0067]
Functional block diagram showing a first embodiment of the present invention Functional block
diagram showing an aspect in which a sound field control chip is integrally mounted on an audio
device. An embodiment in which an audio device, a navigation device and a sensor control ECU
are mounted on a vehicle Fig. 4 schematically shows a diagram sequence diagram schematically
showing an aspect in which a sound field is controlled Fig. 4 corresponding diagram Fig. 5
equivalent diagram functional block diagram showing a second embodiment of the present
invention functional block diagram of car external sound monitoring system Navigation System
Functional Block Diagram Flowchart A functional block diagram illustrating a third embodiment
of the present invention
Explanation of sign
[0068]
In the drawing, 1 is a sound field control system, 2 is a sound field control device, 3 to 9 are onvehicle ECUs (vehicle-mounted devices), 11 is a state management unit (state management
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means), 12 is a road noise recognition unit (road noise recognition means 13) parked / parked
state recognition unit (parked / parked state recognition means) 14: sound output device
recognition unit (sound output device recognition means) 15: sound field control unit (sound
field control means) 17: sound output device 41 is a state management module (state
management means) 42 is a road noise recognition module (road noise recognition means) 43 is
a sound field control module (sound field control means) 101 is a sound field control system 102
is a sound field control Devices, 103 to 109 are in-vehicle systems, 110 is a state management
unit (state management means), 111 is a sound field control unit (sound field control means),
114 and 115 are speakers (sound output devices), and 116 to 119 are speakers ( The sound
output device), 201 sound field control system, 202 is a sound field controller.
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