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DESCRIPTION JP2010263398

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DESCRIPTION JP2010263398
PROBLEM TO BE SOLVED: To provide an "audio device of moving object" capable of
automatically switching the volume adjustment of speakers inside and outside the moving object
according to the speed of the moving object. SOLUTION: An acoustic device 100 of a moving
object according to the present invention includes an internal speaker 34A to 34F installed inside
a ship, an external speaker 42A to 42D installed outside a boat, and an inside that adjusts the
audio output of the internal speaker. The voice adjustment unit 130, the external voice
adjustment unit 140 that adjusts the voice output of the external speaker, the speed detection
unit 112 that detects the speed of the ship, and the internal voice adjustment unit 130 and the
external voice adjustment unit 140 based on the detected speed. And a control unit 120 that
controls switching of adjustment of audio output. [Selected figure] Figure 1
Acoustic device of moving body
[0001]
The present invention relates to an audio device that adjusts the volume of a speaker mounted on
a mobile object such as a car or a ship.
[0002]
Some mobile bodies such as cars and ships have an external speaker for audio output outside the
mobile body, in addition to an internal speaker for voice output inside the mobile body.
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1
For example, for small vessels and boats used for marine leisure such as water skis and
wakeboards, inboard speakers for outputting music etc. to the passengers on board and for users
outside the marine leisure. Outboard speakers for outputting music and voice guides. In addition,
commercial vehicles and emergency vehicles that sell or advertise goods are equipped with
speakers outside the vehicle for outputting announcements and warnings to notify customers
and passersby of the presence of the vehicle. For example, Patent Document 1 adjusts the output
of a loudspeaker outside the vehicle according to the traveling speed in an automobile that sells
articles, etc., and for example, reduces the output of the loudspeaker when the traveling speed
falls below a predetermined position. It is disclosed.
[0003]
Unexamined-Japanese-Patent No. 2001-298798
[0004]
In the conventional moving body sound device, the speakers used in the main differ depending
on the state of the moving body.
For example, in the case of a boat for marine leisure, it is desirable for the passenger to output
sound from the internal speaker if the boat is stopped, and if the boat is running, water skis and
wakeboarding are performed. It is desirable to output voices to people who are However, in the
current acoustic device, even when the user is stopping or running, when the user inputs a
volume instruction, the volume of the internal speaker and the external speaker is uniformly
controlled. For this reason, when the volume is increased according to the outboarder while
traveling, the volume on the ship is also increased, and there is a disadvantage that the volume is
too high for the passenger on the ship.
[0005]
The object of the present invention is to provide an acoustic device for a moving object which
can solve such problems and automatically switch the volume adjustment of the inner and outer
speakers according to the velocity of the moving object. Do.
[0006]
An acoustic device of a mobile according to the present invention adjusts an internal speaker that
outputs voice toward the inside of the mobile, an external speaker that outputs voice toward the
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2
outside of the mobile, and audio output of the internal speaker. A first audio output adjusting
means, a second audio output adjusting means for adjusting the audio output of the external
speaker, a speed detecting means for detecting the speed of the moving object, and a speed
detected by the speed detecting means And control means for controlling switching of
adjustment of the audio output of the first and second audio output adjusting means.
[0007]
Preferably, the control means causes the first audio output adjustment means to adjust the audio
output of the internal speaker when the speed detected by the speed detection means is less than
the threshold, and the speed is equal to or higher than the threshold The second audio output
adjusting means adjusts the audio output of the external speaker.
Preferably, the audio device further comprises input means for receiving an input relating to an
audio output, the control means causing the first and second audio output adjusting means to
adjust the audio output in response to the input from the input means.
[0008]
The control means further includes a first mode for controlling the first or second audio output
adjusting means based on the speed detected by the speed detecting means, the first audio
output adjusting means, and the second audio. And a second mode of simultaneously controlling
the output adjusting means.
In this case, the audio device may further include user input means for selecting the first mode or
the second mode. Preferably, the moving body is a ship, the internal speaker is installed in the
ship, and the external speaker is installed overboard
[0009]
According to the present invention, it is possible to automatically switch the adjustment of the
audio output of the external speaker and the internal speaker according to the speed of the
moving body, so that it is suitable for the inside and outside of the moving body according to the
situation of the moving body. Audio can be output at the volume.
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[0010]
It is a block diagram showing composition of an acoustic device of a mobile in a desirable
embodiment of the present invention.
It is an example of the boat which mounts the acoustic apparatus based on the Example of this
invention, the figure (a) is a side view, and the figure (b) is a top view. It is a block diagram which
shows the structure of the audio equipment based on the 1st Example of this invention. It is a
table showing the relationship between the boat's running condition and control signals C1 and
C2. It is a figure which shows the operation | movement flow of the audio equipment based on
the 1st Example of this invention. It is a figure which shows the example of the operation mode
of the audio equipment based on the 2nd Example of this invention. It is a figure which shows
the example of sound volume adjustment of the acoustic apparatus based on the 2nd Example of
this invention. It is a figure which shows the other example of sound volume adjustment of the
acoustic apparatus based on the 2nd Example of this invention.
[0011]
Hereinafter, embodiments of the present invention will be described in detail with reference to
the drawings. In the present embodiment, the voice output control device mounted on a ship is
illustrated, but the vehicle to be mounted is not limited to a ship.
[0012]
FIG. 1 is a block diagram showing the configuration of an acoustic device of a mobile according
to a preferred embodiment of the present invention. The sound device 10 includes an input unit
12 that receives an input of volume up or down from a user, a speed detection unit 14 that
detects the speed of the moving object, and an internal speaker that outputs voice toward the
internal space of the moving object. 16, an internal sound adjusting unit 18 adjusting the sound
output of the internal speaker 16, an external speaker 20 outputting a sound toward the outside
of the moving body, and an external sound adjusting unit 22 adjusting the sound output of the
external speaker 20 , And a control unit 24 that controls each unit.
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[0013]
The moving body is not particularly limited as long as it is a vehicle on which a person such as a
car or a ship can board. The internal speaker 16 is intended to output voice to the passenger of
the mobile unit, and includes one or more speakers disposed in the internal space of the mobile
unit. The external speaker 20 is intended to output sound to a person outside the mobile unit,
and is preferably installed at the top or side of the mobile unit.
[0014]
The speed detection unit 14 uses a signal from a vehicle speed sensor or a ship speed sensor
mounted on the moving body, and the rate of change in the detected absolute position if a GPS
receiver is mounted. Calculate the speed of the mobile from The detected speed information is
provided to the control unit 24.
[0015]
The control unit 24 controls the operations of the internal sound adjustment unit 18 and the
external sound adjustment unit 22 based on the speed information from the speed detection unit
14. Preferably, the control unit 24 switches the operation of the internal sound adjusting unit 18
and the external sound adjusting unit 22 according to the speed of the moving object, and when
the speed of the moving object is less than a threshold, the internal sound adjusting unit 18 Is
operated to adjust the volume of the internal speaker 16, and when the speed is equal to or
higher than the threshold value, the external sound adjustment unit 22 is operated to adjust the
volume of the external speaker 20.
[0016]
Next, a configuration example of the acoustic device according to the first embodiment of the
present invention will be described. FIG. 2 shows an example of a boat on which the acoustic
device of the present embodiment is mounted. A plurality of seats 30 are installed on the boat B,
and a plurality of internal speakers 34A to 34F are installed in the interior space 32 including
the seats 30. The internal speakers 34A to 34F are arranged at the front, rear, and center of the
ship, for example, to form a 5.1 ch surround space on the ship. In addition, a U-shaped support
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frame 40 is fixed to the rear of the board B, and four external speakers 42A to 42D that output
sound toward the rear of the boat are installed on the top of the support frame 40. .
[0017]
FIG. 3 is a block diagram showing an electrical configuration of the acoustic device shown in FIG.
The audio apparatus 100 according to the present embodiment includes an input unit 110 for
receiving an input from a user, a speed detection unit 112 for detecting the speed of a boat, an
audio signal reproduced by a reproduction apparatus such as a CD or DVD, a radio / television
broadcast receiver The audio signal supply unit 114 that supplies the audio signal output from
the device, the control unit 120 that controls the audio device, the internal audio adjustment unit
130 and the external audio adjustment unit 140 whose operations are controlled by the control
unit 120, the internal audio adjustment The amplifiers 132 and 134 connected to the unit 140,
the amplifier 142 connected to the external sound adjustment unit 140, the inboard front
speakers 34A and 34C connected to the amplifier 132, the inboard rear side internal speakers
34D and 34F, and the amplifier 134 Outboard rear side speakers 34B, 34E on the inside of the
ship connected to the With 42A, 42B, 42C, and 42D.
[0018]
The control unit 120 receives the signals from the input unit 110, the speed detection unit 112,
and the audio signal supply unit 114, and controls the operations of the internal audio
adjustment unit 130 and the external audio adjustment unit 140 based on these signals. First,
when the control unit 120 receives the speed information of the boat B from the speed detection
unit 112, the control unit 120 determines whether the boat is stopped or traveling. For example,
when the speed information is less than the threshold value, it is determined that the vehicle is at
rest, and when it is more than the threshold value, it is determined that the vehicle is traveling.
[0019]
The control unit 120 outputs control signals C1 and C2 related to volume control to the internal
sound adjustment unit 130 and the external sound adjustment unit 140 based on the
determination result. That is, when it is determined that the boat is stopped according to the
table shown in FIG. 4, the control unit 120 outputs the control signal C1 to the internal sound
adjusting unit 130 to adjust the volume of the speakers 34A to 34F, The sound adjustment unit
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140 does not output the control signal C2 and does not adjust the volume of the speakers 42A to
42D. On the other hand, when it is determined that the boat is traveling, the control signal C2 is
output to the external sound adjustment unit 140 to adjust the volume of the speakers 42A to
42D, and the control signal C1 is output to the internal sound adjustment unit 130. The volume
of the speakers 34A to 34F is not adjusted. For example, when the user makes an input to
increase the volume while the boat is traveling, the volume of the outboard speakers 42A to 42D
is increased, and the volume of the onboard speakers 32A to 32F does not change. When the
user makes an input to increase the volume, the volume of the in-ship speakers 32A to 32F is
increased, and the volume of the outboard speakers 42A to 42D does not change.
[0020]
Next, the operation of the audio device of this embodiment will be described with reference to
the flowchart of FIG. When the control unit 120 receives an audio signal from the audio signal
supply unit 114, the control unit 120 supplies the audio signals S1 and S2 to the internal audio
adjustment unit 130 and the external audio adjustment unit 140, whereby the onboard speakers
34A to 34F and the ship are provided. Audio is output from the external speakers 42A to 42D
(step S101).
[0021]
The control unit 120 monitors the presence or absence of an input related to volume adjustment
from the input unit 110 (step S102), and if there is an input related to volume adjustment, next
whether the boat is stopped based on the speed information from the speed detection unit 112 It
is determined whether or not (step S103). When the control unit 120 determines that the boat is
stopped, as described above, the control unit 120 outputs the control signal C1 according to the
input related to the sound adjustment to the internal sound adjusting unit 130 (step S104). ,
Adjust the volume of the on-board speakers 34A to 34F via the amplifiers 132 and 134 based on
the control signal C1 (step S105). On the other hand, when determining that the boat is traveling,
the control unit 120 outputs the control signal C2 according to the input related to the sound
adjustment (step S106), and the external sound adjusting unit 140 controls the amplifier 142
based on the control signal C2. The volume of the outboard speakers 42A to 42D is adjusted
(step S107).
[0022]
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As described above, by automatically switching the volume control of the inboard or the
outboard according to the speed of the boat, it is possible to output the sound at an appropriate
volume to the inboard or the outboard of the boat. In the above embodiment, when there is an
input from the user regarding volume adjustment, the boat speed is detected to determine
whether or not the boat is at a stop. It may be determined whether or not it is stopped, and when
there is an input regarding volume adjustment, the determination result may be used.
[0023]
Next, a second embodiment of the present invention will be described. In the first embodiment,
the control unit 120 automatically switches the volume adjustment of the inboard or outboard
speakers according to the speed of the boat, but the second embodiment sets a plurality of
operation modes. According to the operation mode, switching of the volume adjustment of the
outboard or inboard speaker is performed.
[0024]
6 (a) and 6 (b) show the operation modes of the acoustic device in the second embodiment. First,
as shown in FIG. 6A, the control unit 120 includes mode 1 and mode 2 operation modes, and
when mode 1 is set, the controller 120 sets the speed of the boat as shown in the first
embodiment. Accordingly, automatic control of the volume adjustment of the inboard or
outboard speakers is performed, and when mode 2 is set, the volume adjustment of both the
outboard and inboard speakers is simultaneously performed. The setting of mode 1 or mode 2 is
preferably performed by the user selecting via input unit 110.
[0025]
When mode 2 is selected, the control unit 120 responds to the input related to the volume
adjustment, to both the internal sound adjustment unit 130 and the external sound adjustment
unit 140 whether the boat is stopped or traveling. The control signals C1 and C2 are output to
adjust the volume of the inboard and outboard speakers 34A to 34F and 42A to 42D.
[0026]
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FIG. 7 is a diagram for explaining the volume adjustment operation in mode 2.
As shown in FIG. 7A, when there is an input to increase the volume when the volume of the
inboard speakers 34A to 34F and the outboard speakers 42A to 42D are in the same state, the
internal voice adjustment unit 130 and the external voice adjustment unit 140 simultaneously
increases the volume of the inboard and outboard speakers at the same rate via the amplifiers
132, 134, 142. When the volume reaches the maximum value as shown in FIG. 7 (b), it is
saturated there. From the state of FIG. 7B, when there is an input to lower the volume, the
internal audio adjustment unit 130 and the external audio adjustment unit 140 simultaneously
decrease the volume of both the inboard and outboard speakers at the same rate.
[0027]
Also, as shown in FIG. 7 (d), when the volume of the inboard and outboard speakers are different,
if there is an input to increase the volume, the inboard and outboard speakers will increase in
volume at the same rate The sound volume of one of the speakers (in this example, the outboard
speaker) reaches the maximum value and is saturated as shown in FIG. 7 (e). Subsequently, when
the volume is increased, as shown in FIG. 7 (f), the volume of the on-board speaker reaches the
maximum value and is saturated. From the state of FIG. 7 (f), when there is an input to lower the
volume, the control unit 120 controls the internal voice adjustment unit 130 and the external
voice adjustment unit 140 so that the volume of the inboard and outboard speakers decreases at
the same rate. Do.
[0028]
Further, in mode 2, it is possible to change the rate of increase or decrease of the volume of the
inboard and outboard speakers while the vehicle is stopped and running. FIGS. 8 (a) to 8 (d) show
an example when traveling in mode 2. FIG. As shown in FIG. 8 (a), when the volume of the
inboard and outboard speakers are in the same state and there is an input to increase the volume
of both inboard and outboard speakers, as shown in FIG. 8 (b) The increase rate of the volume of
the outboard is higher than that of the ship, and as shown in FIG. 8 (c), when the maximum value
is reached, saturation occurs there. When there is an input to lower the volume from the state of
FIG. 8 (c), the internal audio adjustment unit 130 and the external audio adjustment unit 140
reduce the volume of both the inboard and the outboard speakers at the same rate, as shown in
FIG. As shown, the inboard and outboard volumes are in the same state. However, the rate at
which the volume is lowered may be made larger than the rate at which the outboard is provided,
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as in the case of increasing the volume.
[0029]
FIGS. 8 (d) to 8 (e) are examples when the mode 2 is stopped. As shown in FIG. 8 (d), as shown in
FIG. 8 (e), when the volume of the inboard and outboard speakers is in the same state and there
is an input to increase the volume of both inboard and outboard speakers. , The increase rate of
the volume of the ship is higher than that of the overboard. Then, as shown in FIG. 8 (f), when the
maximum value is reached, saturation occurs. When there is an input to lower the sound volume
from the state of FIG. 8 (f), the internal sound adjustment unit 130 and the external sound
adjustment unit 140 decrease the sound volume of both the inboard and outboard speakers at
the same rate, as shown in FIG. As shown, the inboard and outboard volumes are in the same
state. However, as in the case of raising the volume, the rate at which the volume is lowered may
be set to a rate at which the inboard is greater than the rate at which the outboard.
[0030]
FIG. 6 (b) shows an example of another operation mode. Mode 1 adjusts the volume of the
speakers 34A to 34F on the ship by the internal sound adjustment unit 130, mode 2 adjusts the
volume of the speakers 42A to 42D on the outboard by the external sound adjustment unit 140,
and mode 3 The sound adjustment unit 130 and the external sound adjustment unit 140 adjust
the volume of the inboard and outboard speakers 34A to 34F and 42A to 42D. The control unit
120 can select mode 1 or mode 2 based on the speed information from the speed detection unit
112, and at the same time, the user selects one of modes 1, 2 and 3 via the input unit 110. can
do.
[0031]
As described above, according to the second embodiment, it is possible to easily adjust the
volume of the inboard or outboard speaker in accordance with the mode selected from the
plurality of operation modes.
[0032]
Next, a third embodiment of the present invention will be described.
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The sound device according to the third embodiment adjusts the volume according to the
traveling direction of the moving object. For example, when a car goes backward or turns, an
audio warning such as "back" or "turn right" is output from an external speaker to alert a
pedestrian or the like around the car. When such a warning is output, it is preferable that the
volume of the external speaker be automatically increased. Therefore, in the third embodiment,
automatic switching of the internal or external speaker is performed in consideration of the
traveling direction of the moving body, in addition to the speed information of the moving body.
[0033]
The control unit 120 inputs information on the traveling direction of the moving body, such as
the steering angle, gear position, direction indicator, etc., and determines whether the moving
body advances, retracts, or changes direction. When the traveling direction of the mobile unit
coincides with a predetermined direction, for example, when the mobile unit moves backward or
when the control unit 120 changes the direction, the volume output from the external speaker is
equal to or higher than the threshold value. If it is less than the threshold value, the volume is
automatically adjusted to be equal to or higher than the threshold value.
[0034]
As described above, according to the third embodiment, it is possible to automatically select an
external speaker and adjust its sound according to the traveling direction of the moving body.
[0035]
Although the preferred embodiments of the present invention have been described above in
detail, the present invention is not limited to the specific embodiments, and various modifications
may be made within the scope of the present invention as set forth in the claims. Modifications
and changes are possible.
[0036]
Although the boat is illustrated as the mobile in the above embodiment, the mobile can be a car
or other vehicle.
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Furthermore, the number and the installation position of the speakers shown in the abovementioned embodiment are examples, and it is possible to change suitably in the number and the
installation position of other than this.
[0037]
30: Seat 32: Internal space 34A to 34F: Internal speaker 40: Support frame 42A to 42D: External
speaker 132, 134, 142: Amplifier B: Boat
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