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JPH06319198

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DESCRIPTION JPH06319198
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio apparatus for selecting and playing an arbitrary source from a plurality of sources, and in
particular, to drive speakers with different directivity simultaneously or independently by two
sources, and further The present invention relates to an audio apparatus having a function of
processing a sound field or changing the volume of two speakers simultaneously or
independently.
[0002]
2. Description of the Related Art Although there are conventional audio devices which select one
source from a plurality of sources by an input selector to play, there is only one music source to
be played as shown in FIG. 17 (a). , Only one music source was driving the R channel and L
channel speakers.
[0003]
Further, as shown in FIG. 17B, in the case where the R channel and L channel speakers each have
two speakers, those speakers are driven by a common signal for each channel.
[0004]
SUMMARY OF THE INVENTION In the above-described prior art, the combination of sounds is
limited in order to play only one music source, and it has not been possible to enjoy music in a
desired environment.
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1
[0005]
The present invention has been made in view of the above-described point, and the object of the
present invention is to simultaneously process two sources and perform sound field processing,
or to arbitrarily set the volume ratio of two speakers having different directivity. It is an object of
the present invention to provide an audio device having a function of setting according to the
sound field pattern or sound field pattern.
[0006]
An audio apparatus according to the present invention is an audio apparatus for driving an L
channel speaker and an R channel speaker respectively provided with speakers (1) and speakers
(2) having different directivity, and a plurality of sources. Switching means for specifying a
plurality of sources from the above, and an adder for adding a plurality of source sound signals
specified by the switching means, the speaker (1) and the speaker (2) according to the signal
added by the adder It is possible to drive at the same time.
[0007]
Furthermore, according to the audio device of the present invention, in the audio device for
driving the L channel speaker and the R channel speaker respectively provided with the speaker
(1) and the speaker (2) having different directivity, the switch for specifying a plurality of sources
from a plurality of sources Means for enabling the speaker (1) and the speaker (2) to be
independently driven by a signal obtained by adding or not adding a plurality of source sound
signals designated by the switching means. is there.
[0008]
Furthermore, according to the audio device of the present invention, in the audio device for
driving the L channel speaker and the R channel speaker respectively provided with the speaker
(1) and the speaker (2) having different directivity, the switch for specifying a plurality of sources
from a plurality of sources Means, sound field processing means for performing sound field
processing on at least one source output designated by the switching means, source sound
signals other than the source sound signal processed by the sound field processing means, and
sound field processing means An adder for adding the outputs from B., and the speaker (1) and
the speaker (2) can be simultaneously driven by the signal added by the adder.
[0009]
Furthermore, according to the audio device of the present invention, in the audio device for
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2
driving the L channel speaker and the R channel speaker respectively provided with the speaker
(1) and the speaker (2) having different directivity, the switch for specifying a plurality of sources
from a plurality of sources Means, sound field processing means for performing sound field
processing on at least one source output designated by the switching means, and any source
sound signal and sound other than the source sound signal processed by the sound field
processing means It comprises an adder for adding the outputs from the field processing means,
and it is possible to drive the speakers (1) and (2) independently by the signal added by the
adder or the signal not added. It is
[0010]
Furthermore, according to the audio device of the present invention, in the audio device for
driving the L channel speaker and the R channel speaker respectively provided with the speaker
(1) and the speaker (2) having different directivity, the switch for specifying a plurality of sources
from a plurality of sources Means and level adjusting means for adjusting the level of at least one
source output designated by the switching means, the source sound signal processed by the level
adjusting means and the level adjustment of the designated sources The speaker (1) and the
speaker (2) can be driven independently of each other by the source sound signal other than the
processed source sound signal.
[0011]
Furthermore, according to the audio device of the present invention, in the audio device for
driving the L channel speaker and the R channel speaker respectively provided with the speaker
(1) and the speaker (2) having different directivity, the switch for specifying a plurality of sources
from a plurality of sources Means, sound field processing means for performing sound field
processing on at least one source output designated by the switching means, and any source
sound signal and sound other than the source sound signal processed by the sound field
processing means The sound field pattern set in the sound field processing means includes an
adder for adding the output from the field processing means, and a level adjusting means for
adjusting the level of the signal added or not added by the adder. Automatically adjust the level
adjustment means according to the speaker (1) and the speaker (2) by the level adjustment
means. In which made it possible to independently driven by bell set signal.
[0012]
Furthermore, according to the audio device of the present invention, in the audio device for
driving the L channel speaker and the R channel speaker respectively provided with the speaker
(1) and the speaker (2) having different directivity, the switch for specifying a plurality of sources
from a plurality of sources Means, sound field processing means for performing sound field
processing on at least one source output designated by the switching means, a source sound
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signal processed by the sound field processing means, and a sound field among the designated
sources The speaker (1) and the speaker are provided with level adjustment means for adjusting
the level of the source sound signal not processed, the level adjustment means being
automatically set according to the sound field pattern set in the sound field processing means It
is possible to independently drive (2) by the signal whose level is set by the level adjusting
means.
[0013]
Furthermore, according to the audio device of the present invention, in the audio device for
driving the L channel speaker and the R channel speaker respectively provided with the speaker
(1) and the speaker (2) having different directivity, the switch for specifying a plurality of sources
from a plurality of sources Means, sound field processing means for performing sound field
processing on at least one source output designated by the switching means, and any source
sound signal and sound other than the source sound signal processed by the sound field
processing means An adder for adding the output from the field processing means, and a level
adjusting means for adjusting the level of the signal added or not added by the adder, wherein
the level adjusting means is set only manually. The speaker (1) and the speaker (2) are
independently driven by the signal level-set by the level adjusting means. It allows the audio
device.
[0014]
In the audio apparatus according to the present invention, in the audio apparatus having the
sound field processing means and the level adjusting means, the operation of the level adjusting
means is invalidated for a specific sound field pattern set in the sound field processing means.
The level ratio of the signal for driving the speaker (1) and the speaker (2) is fixed to a
predetermined level ratio.
[0015]
According to the audio apparatus of the present invention, as shown in FIG. 1, two speakers (1)
and (2) having different directivity are driven simultaneously or independently by two sources,
and sound field processing is performed. Or by setting the volume ratio of the two speakers with
different directivity arbitrarily or according to the sound field pattern, in any environmental
sound that could not be achieved by the conventional audio devices. It became possible to do
music watching.
[0016]
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An audio apparatus according to
an embodiment of the present invention will be described with reference to the drawings.
FIG. 2 is a block diagram showing the hardware configuration of the present invention.
1 shown in the figure is a nondirectional speaker called an omnitop speaker, and 2 is a
directional speaker.
[0017]
The speakers 1 and 2 are attached to one cabinet and constitute an R channel speaker and an L
channel speaker.
Although only one channel is shown in the figure, such speakers are provided for both RL
channels.
The same applies to the drive system of the speaker.
Reference numerals 3 and 4 denote selector switching devices for specifying two or one source
simultaneously from a plurality of sources, which select a sub source and a main source,
respectively.
[0018]
A digital signal processor 5 processes digital audio signals so as to reproduce the realism of
various environments such as so-called Dolby Surround, arena, jazz club, disco, church, movie
theater and the like.
[0019]
6 is a level adjustment device, which adjusts the level of the sub source.
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5
Reference numeral 7 denotes an adder having a switching device internally, which selects and
adds an arbitrary input and outputs it to an arbitrary output line.
[0020]
A balance adjustment volume 8 sets the level ratio of the sub source and the main source.
9 is a master volume, which increases / decreases the levels of the sub source and the main
source at the same time.
Numeral 10 is a key input device for switching the input of the selector switching device and
selecting the sound field pattern of the digital signal processor 5, and outputs a signal to the
microcomputer 11.
[0021]
11 is a one-chip microcomputer incorporating a ROM, a RAM, and an input / output interface,
which operates according to a program written in the ROM and a signal from the key input
device 10, a selector switching device 3, 4 digital signal processor 5, It controls the level
adjustment device 6, the adder 7, the balance adjustment volume 8 and the master volume 9.
[0022]
Next, various functions implemented by the hardware configured as described above will be
described with reference to FIGS.
FIG. 3 is a block diagram for explaining the function of the audio device of claim 1.
As shown in the figure, sources indicated by α and β are selected by the selector switching
devices 3 and 4, and these source sound signals are added by the adder 7 to drive the speaker 1
and the speaker 2 simultaneously.
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Although an amplifier for driving the speaker is not shown in the figure, the above-mentioned
added signal is amplified by the power amplifier to drive the speaker.
The same applies to the following description.
[0023]
FIG. 4 is a block diagram for explaining the function of the audio device of claim 2.
As shown in the figure, sources indicated by α and β are selected by the selector switching
devices 3 and 4, and these source sound signals drive the speaker 1 and the speaker 2
independently.
[0024]
FIG. 5 is a block diagram for explaining the function of the audio device of claim 2 as well.
As shown in the figure, the sources indicated by α, β, γ and δ are selected by the selector
switching devices 3 and 4, and any selected set of signals are added by the adder 7, and the
added signals become independent. The speaker 1 and the speaker 2 are driven.
[0025]
FIG. 6 is a block diagram for explaining the function of the audio device of claim 3.
As shown in the figure, the sources indicated by α and β are selected by the selector switching
devices 3 and 4, and one of the source sound signals is subjected to sound field processing by the
digital signal processor 5 and sound field processing by the adder 7. Not added to the source
sound signal.
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The summed signal drives speaker 1 and speaker 2 simultaneously.
[0026]
FIG. 7 is a block diagram for explaining the function of the audio device of claim 4. As shown in
the figure, sources indicated by α and β are selected by the selector switching devices 3 and 4,
and one of the source sound signals is subjected to sound field processing by the digital signal
processor 5. The signal subjected to the sound field processing is added to any of the source
sound signals selected by the switching device 7a of the adder 7, and the respective signals thus
obtained drive the speakers 1 and 2 independently. .
[0027]
FIG. 8 shows the procedure of operation in the audio apparatus in which the above-mentioned
function is realized. First, in step S1, by pressing the MAIN INPUT key, a source to be heard as a
main source is selected. In step S2, it is determined by key operation whether to hear the
environmental sound at the same time, and if the environmental sound is not heard, the
performance of only the main source is performed.
[0028]
In the case of listening to the environmental sound, in step S3, pressing the DUAL SOUND key
selects a source to be heard as a sub source. Next, in step S4, a sound field pattern is selected,
and in step S5, the volume ratio of the speakers 1 and 2 is set to a predetermined volume ratio,
and a performance is performed.
[0029]
FIG. 9 is a block diagram for explaining the function of the audio device of claim 5. As shown in
the figure, sources indicated by α and β are selected by the selector switching devices 3 and 4.
The level adjustment device 6 adjusts the level of the source sound signal selected as the sub
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8
source. The sub source signal and the main source signal obtained in this manner drive the
speaker 1 and the speaker 2 independently.
[0030]
FIG. 10 shows the procedure of operation in the audio apparatus in which the above-mentioned
function is realized. First, in step S1, by pressing the MAIN INPUT key, a source to be heard as a
main source is selected. In step S2, it is determined by key operation whether to hear the
environmental sound at the same time, and if the environmental sound is not heard, the
performance of only the main source is performed.
[0031]
In the case of listening to the environmental sound, in step S3, pressing the DUAL SOUND key
selects a source to be heard as a sub source. Next, in step S4, the level of the sub-source is set by
the DUAL SOUND LEVEL key, and in step S5, the volume ratio of the speakers 1 and 2 is set to a
predetermined volume ratio, and a performance is performed.
[0032]
FIG. 11 is a block diagram for explaining the function of the audio device of claims 6 and 9. As
shown in the figure, sources indicated by α and β are selected by the selector switching devices
3 and 4, and one of the source sound signals is subjected to sound field processing by the digital
signal processor 5. The signal subjected to sound field processing is added to any of the source
sound signals selected by the switching device 7a of the adder 7, and the respective signals
obtained in this manner are set in the level ratio by the balance adjustment volume 8. The
speaker 1 and the speaker 2 are driven independently.
[0033]
The balancing volume 8 and the switching device 7a operate according to the sound field pattern
set by the digital signal processor 5, but it is also possible to manually adjust the balancing
volume 8 later. Depending on the sound field pattern, the operation of the balance adjustment
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volume 8 is invalidated, and the volume ratio of the speakers 1 and 2 is fixed to a predetermined
volume ratio. In that case, the invalidity of the balance adjustment volume 8 is displayed.
[0034]
FIG. 12 shows the procedure of operation in the audio apparatus in which the above-described
function is realized. First, in step S1, by pressing the MAIN INPUT key, a source to be heard as a
main source is selected. In step S2, it is determined by key operation whether to hear the
environmental sound at the same time, and if the environmental sound is not heard, the
performance of only the main source is performed.
[0035]
In the case of listening to the environmental sound, in step S3, pressing the DUAL SOUND key
selects a source to be heard as a sub source. Next, in step S4, the level of the sub-source is set by
the DUAL SOUND LEVEL key, and in step S5, a sound field pattern is selected, and in step S6, the
selected sound field pattern is determined.
[0036]
In step S7, it is determined whether or not the sound field processing pattern is to set the volume
ratio of the speakers 1 and 2, and if it is the sound field processing pattern to set the volume
ratio of the speakers 1 and 2, in steps S8 and 9, FIG. As shown in, the performance is performed
while setting the volume ratio corresponding to each sound field processing pattern. If it is not
the sound field processing pattern for setting the volume ratio of the speakers 1 and 2, the
volume ratio of the speakers 1 and 2 is fixed to a predetermined volume ratio and the
performance is performed.
[0037]
FIG. 14 is a block diagram for explaining the function of the audio device of claims 7 and 9. As
shown in the figure, sources indicated by α and β are selected by the selector switching devices
3 and 4. The source sound signal selected as the main source is a digital signal. The sound field is
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processed by the processor 5. The volume ratio is set by the balance adjustment volume 8 to
drive the speaker 1 and the speaker 2 independently. The balance adjustment volume 8 sets the
volume ratio according to the selected sound field pattern, but the operation is invalidated
depending on the sound field pattern. In addition, the procedure of operation is as having
demonstrated FIG. 12 and FIG.
[0038]
FIG. 11 is a block diagram for explaining the functions of the audio device of claims 8 and 9. As
shown in the figure, sources indicated by α and β are selected by the selector switching devices
3 and 4. The source sound signal of one of the selected signals is subjected to sound field
processing by the digital signal processor 5.
[0039]
The signal subjected to the sound field processing is added to any of the source sound signals
selected by the switching device 7a of the adder 7, and the respective signals obtained in this
manner are set to the volume ratio by the balance adjustment volume 8. The speaker 1 and the
speaker 2 are driven independently. Although the balance adjustment volume 8 is manually set,
its operation is invalidated depending on the selected sound field pattern.
[0040]
FIG. 16 shows an operation procedure in the audio device in which the above-described function
is realized. First, in step S1, by pressing the MAIN INPUT key, a source to be heard as a main
source is selected. In step S2, it is determined by key operation whether to hear the
environmental sound at the same time, and if the environmental sound is not heard, the
performance of only the main source is performed.
[0041]
In the case of listening to the environmental sound, in step S3, pressing the DUAL SOUND key
selects a source to be heard as a sub source. Next, in step S4, the level of the sub-source is set by
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the DUAL SOUND LEVEL key.
[0042]
Next, in step S5, whether or not to manually set the volume ratio of speakers 1 and 2 is
determined by key operation. If not set, the volume ratio of speakers 1 and 2 is fixed at a
predetermined volume ratio, and the performance is To be done. When the volume ratio of the
speakers 1 and 2 is set manually, the balance adjustment volume 8 is set manually in step S6, but
the operation is invalidated depending on the selected sound field pattern.
[0043]
According to the audio apparatus of the present invention, it is possible to enjoy the feeling of
listening to music while feeling the nature or the season by selecting the source sound.
[0044]
Also, depending on the combination of sounds, music can be enlivened by the noise and the
summons of concert halls, jazz clubs or stadiums.
[0045]
Furthermore, by automatically setting the balance adjustment volume, it is possible to
automatically make an optimal environmental sound suited to the music.
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