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JP2009253923

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DESCRIPTION JP2009253923
PROBLEM TO BE SOLVED: To reproduce audio from a low frequency speaker when a user
desires to reproduce sound from a low frequency speaker in an AV amplifier provided with a
direct mode. SOLUTION: When it is judged that the use presence / absence setting of the low
range speaker is set to use presence, the direct mode is inhibited from being set from the off
state to the on state according to the user operation, and the low range speaker When it is
determined that the use / non-use setting of is set to use / non-use, the direct mode is permitted
to be set from the off state to the on state according to the user operation. Therefore, it is
possible to prevent the problem that the audio is not reproduced from the low frequency speaker
because the direct mode is erroneously set to the on state although the user desires to reproduce
the sound from the low frequency speaker. [Selected figure] Figure 5
Voice processing apparatus and program thereof
[0001]
The present invention relates to an audio processing apparatus having a direct mode.
[0002]
The AV amplifier receives audio data of a plurality of channels from a DVD player or the like,
performs predetermined audio processing on the audio data, and outputs the audio data to a
plurality of connected speakers.
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1
For example, when 6 speakers (for example, left speaker, right speaker, center speaker, low
frequency speaker, surround left speaker, surround right speaker) are connected to the AV
amplifier, audio data of 2 ch (left audio) When the data and the right audio data are input, the AV
amplifier generates, from the left audio data and the right audio data, audio data for 6 channels
to be output to these six speakers in the DSP. As a result, even when audio data of 2 ch is input to
the AV amplifier, audio can be reproduced from six speakers.
[0003]
The AV amplifier is provided with a mode called direct mode. In direct mode, when 2ch of audio
data is input, the above DSP does not execute processing to generate 6ch of audio data, and 2ch
of audio data is amplified as it is and only the left speaker and right speaker are processed. It is a
mode to output. The direct mode can not play audio from the center speaker, low-pass speaker,
surround left speaker, and surround right speaker, but can improve the sound quality of the
audio played from the left speaker and the right speaker.
[0004]
Here, when the user connects, for example, a low band speaker to the AV amplifier and desires to
reproduce the sound from the low band speaker, if the direct mode is erroneously set to the ON
state, the low level is set for the above reason. There is a problem that the user feels strange
because the audio is not reproduced from the area speaker. The same applies to the center
speaker, the surround left speaker, and the surround right speaker.
[0005]
In particular, the AV amplifier has a product called an AV amplifier with a built-in low frequency
speaker. Although such products have low frequency speakers built-in, the user understands that
the sound is reproduced from the low frequency speakers, but when the direct mode is set to the
ON state as described above, the low frequencies The above problem is particularly pronounced,
as no sound is played from the speakers. Also, recently, a TV rack with a built-in left speaker,
right speaker, center speaker, low frequency speaker and AV amplifier has been marketed. Also
in such a product, there is a problem that when the direct mode is set to the on state, the sound
is not reproduced from the center speaker and the low frequency speaker.
09-05-2019
2
[0006]
JP 2007-53553 A
[0007]
The present invention has been made to solve the above-mentioned conventional problems, and
its object is to provide a direct mode, and when the user desires to reproduce the sound from the
second channel speaker, the second channel speaker is used. An audio processing apparatus
capable of reproducing audio.
[0008]
A voice processing apparatus according to a preferred embodiment of the present invention
comprises: input means for receiving first channel voice data; mode setting means for setting a
direct mode to an on state or an off state according to a user operation; Audio processing means
for generating the first channel audio data and second channel audio data from audio data, and
when the direct mode is set to the on state, the generation processing by the audio processing
means is not executed. When the first channel audio data is output to the first channel speaker,
and the direct mode is set to the off state, the generation processing by the audio processing
means is executed, and the first channel audio data is transmitted to the first channel. Output to
the speaker, and the second channel audio data to the second channel It is determined whether
or not the output means for outputting to the speaker, the speaker setting means for setting the
use / nonuse of the second speaker according to the user operation, and the use / nonuse setting
of the second speaker are set to be available Means for preventing the direct mode from being
set from the off state to the on state in accordance with the user operation when it is determined
that the use / nonuse setting of the second speaker is set to use presence, (2) setting control
means for permitting the direct mode to be set from the off state to the on state according to the
user operation when it is determined that the use / non-use setting of the two speakers is set to
use non-use;
[0009]
When the use / non-use setting of the second channel speaker is set to use and the user desires
to reproduce the sound from the second channel speaker, the direct mode may be set to the on
state by the setting control means. It is forbidden.
Therefore, it is possible to prevent the problem that the audio is not reproduced from the second
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3
channel speaker because the direct mode is set to the on state although the user desires to
reproduce the audio from the second channel speaker.
[0010]
Preferably, the voice processing apparatus further comprises display means for displaying a
direct mode setting screen for setting the direct mode to the on state or the off state according to
the user operation, and the use presence / absence setting of the second speaker is used If it is
determined that the second speaker is set to be present, the setting control means determines
that the use / non-use setting of the second speaker is set to useless without displaying the direct
mode setting screen on the display means. When being, the setting control means causes the
display means to display the direct mode setting screen.
[0011]
Preferably, the determination unit further determines whether the use / non-use setting of the
second speaker is changed from useless to use / use, and when the direct mode is set to the on
state, the second speaker When it is determined that the use / non-use setting of is changed from
non-use to use / not use, the setting control means changes the setting of the direct mode from
on to off.
[0012]
When the direct mode is on, and the use / non-use setting of the second channel speaker is
changed to use by user operation, the second channel is desired although the user desires to
reproduce the sound from the second channel speaker. Although sound is not reproduced from
the speaker, in this example, the setting control means can solve this problem by automatically
setting the direct mode to the off state.
[0013]
Preferably, the first channel audio data is left audio data and right audio data, the first channel
speaker is a left speaker and right speaker, and the second channel audio data is low-pass audio
data or central audio data. And the second channel speaker includes a low frequency speaker or
a central speaker, and the low frequency speaker or the central speaker is provided inside the
audio processing device.
[0014]
If the low range speaker or the center speaker is built in the audio processing device, the built-in
low range speaker is not played back from the low range speaker or the center speaker because
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the direct mode is set to the ON state. Alternatively, since the central speaker is wasted, the
above effect is particularly remarkable when the low frequency speaker or the central speaker is
incorporated.
[0015]
A voice processing apparatus according to another preferred embodiment of the present
invention comprises: input means for receiving first channel voice data; mode setting means for
setting a direct mode to an on state or an off state according to a user operation; Audio
processing means for generating the first channel audio data and second channel audio data
from one-channel audio data, and the generation processing by the audio processing means
when the direct mode is set to the on state Instead, when the first channel audio data is output to
the first channel speaker and the direct mode is set to the off state, the generation processing by
the audio processing means is executed, and the first channel audio data is output as the first
channel audio data. Output to the one channel speaker, and the second channel audio data is
output to the second channel. The output means for outputting to the speaker, the speaker
setting means for setting the use / nonuse of the second speaker according to the user operation,
and whether the use / nonuse setting of the second speaker is changed from useless to useable If
it is determined that the use / nonuse setting of the second speaker is changed from useless to
use when the direct mode is set to the on state, the direct mode is set from the on state to the off
state. And setting control means for changing the setting.
[0016]
When the direct mode is on, and the use / non-use setting of the second channel speaker is
changed to use by user operation, the second channel is desired although the user desires to
reproduce the sound from the second channel speaker. Although sound is not reproduced from
the speaker, in this example, the setting control means can solve this problem by automatically
setting the direct mode to the off state.
[0017]
When the use / non-use setting of the second channel speaker is set to use and the user desires
to reproduce the sound from the second channel speaker, the direct mode may be set to the on
state by the setting control means. It is forbidden.
Therefore, it is possible to prevent the problem that the audio is not reproduced from the second
channel speaker because the direct mode is erroneously set to the on state although the user
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desires the audio reproduction from the second channel speaker. .
[0018]
Hereinafter, the AV amplifier 100 according to a preferred embodiment of the present invention
will be specifically described with reference to the drawings, but the present invention is not
limited to these embodiments.
[0019]
FIG. 1 is a diagram for explaining an example of the arrangement of the AV amplifier 100, the
display device 200, and the speakers in the present embodiment (a DVD player is omitted).
The low-frequency speaker SSW is built in the AV amplifier 100, and a display device 200, a left
speaker SL, a right speaker SR, a center speaker SC, a surround left speaker SSL, and a surround
right speaker SSR are connected.
The low-pass speaker SSW may not be built in the AV amplifier, and may be externally connected
to the AV amplifier 100.
For example, 2 channels of analog or digital audio data (left audio data and right audio data)
supplied from a DVD player are input to the AV amplifier 100.
When the direct mode to be described later is set to the on state, audio is reproduced from the
left speaker SL and the right speaker SR based on the left audio data and the right audio data.
When the direct mode is set to the off state, the left speaker SL, the right speaker SR, the center
speaker SC, the low range speaker SSW, the surround left speaker SSL, and the surround right
speaker based on the left audio data and the right audio data Play audio from SSR.
[0020]
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6
FIG. 2 is a schematic block diagram showing the configuration of the AV amplifier 100. As shown
in FIG.
In addition, in FIG. 2, although the center speaker SC, the surround left speaker SSL, and the part
(a volume adjustment part and amplification process part) corresponding to the surround right
speaker SSR are abbreviate | omitted in order to simplify description, it is low. This is the same as
the part corresponding to the range speaker SSW, and the description is used.
Further, in FIG. 2, a general configuration as an AV amplifier 100 such as a power supply circuit
is omitted.
[0021]
The AV amplifier 100 includes a control unit 1, switch units 2 and 3, volume adjustment units 4
(4 L, 4 R, 4 SW), amplification processing units 5 (5 L, 5 R, 5 SW), and an analog-digital
conversion unit (hereinafter referred to as , ADC.
6), the switch unit 7, and a digital signal processing unit (hereinafter referred to as DSP).
8) and a digital-analog converter (hereinafter referred to as DAC). 11) and a conversion unit
(hereinafter referred to as DIR). 12), a memory 13, a display unit 14, and an operation unit 15.
The DSP 8 internally includes an audio processing unit 9 and a switch unit 10.
[0022]
The control unit 1 controls each unit of the AV amplifier 100 based on an operation program of
the AV amplifier 100 stored in the memory 13 and is, for example, a microcomputer or a CPU.
The control unit 1 executes various processes based on user operation input from the operation
unit 15 or control data from each unit.
[0023]
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7
The switch unit 2 selects analog left audio data from, for example, a DVD player or the like, and
selects whether to output analog left audio data to the volume adjustment unit 4L or output to
the ADC 6 according to an instruction from the control unit 1 Do. Similarly, the switch unit 3 is
instructed by the control unit 1 whether analog right audio data is input from, for example, a
DVD player or the like, and the analog right audio data is output to the volume adjustment unit
4R or to the ADC 6. Choose accordingly.
[0024]
The volume adjustment unit 4L adjusts the volume level of the analog left audio data supplied
from the switch unit 2 or the analog left audio data supplied from the DAC 11, and outputs the
adjusted volume level to the amplification processing unit 5L. The amplification processing unit
5L performs amplification processing on the analog left audio data supplied from the volume
adjustment unit 4L, and outputs the analog left audio data to the left speaker SL connected to the
outside.
[0025]
The volume adjustment unit 4R adjusts the volume level of the analog right audio data supplied
from the switch unit 3 or the analog right audio data supplied from the DAC 11, and outputs the
adjusted volume level to the amplification processing unit 5R. The amplification processing unit
5R performs amplification processing on the analog right audio data supplied from the volume
adjustment unit 4R, and outputs the analog right audio data to the externally connected right
speaker SR.
[0026]
The volume adjustment unit 4SW adjusts the volume level of the analog low-pass audio data
supplied from the DAC 11 and outputs the volume level to the amplification processing unit
5SW. The amplification processing unit 5SW performs amplification processing on the analog
low-pass audio data supplied from the volume adjustment unit 4SW, and outputs the analog lowpass audio data to the built-in low-pass speaker SSW.
09-05-2019
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[0027]
The ADC 6 converts analog left audio data supplied from the switch unit 2 and analog right audio
data supplied from the switch unit 3 into digital audio data (digital left audio data and digital
audio data in I2S (the Inter-IC Sound bus) format, for example). It is converted to digital right
audio data) and output to the node 7 a of the switch unit 7.
[0028]
For example, digital audio data (left digital audio data and right digital audio data, for example,
SPDIF (Sony / Philips Digital InterFace) format) is input to the DIR 12 from a DVD player or the
like, and SPDIF format is converted to digital audio data of I2S format. Do.
The DIR 12 outputs the converted digital audio data in I2S format to the node 7 b of the switch
unit 7.
[0029]
The switch unit 7 selects one digital audio data from the digital audio data supplied from the ADC
6 and the digital audio data supplied from the DIR 12 in accordance with an instruction from the
control unit 1 and outputs the audio of the DSP 8 Output to the processing unit 9 and the switch
unit 10.
[0030]
The audio processing unit 9 generates, for example, left audio data, right audio data, central
audio data, low-pass audio data, surround left audio data, surround right audio data, based on 2
channels of digital audio data supplied from the switch unit 7. The digital audio data of 6 ch
including D. is generated and output to the node 10 a of the switch unit 10.
In addition, as necessary, the audio processing unit 9 performs predetermined audio processing
(for example, signal processing, delay processing, equalizer processing, etc.) corresponding to the
listening mode selected by the user operation on the above-mentioned digital audio data. May be
performed.
09-05-2019
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[0031]
The switch unit 10 receives 2ch digital audio data supplied from the switch unit 7 without
passing through the audio processing unit 9 according to an instruction from the control unit 1
and 6ch digital audio supplied from the audio processing unit 9. Among the data, one digital
audio data is selected and output to the DAC 11.
[0032]
The DAC 11 performs digital-analog conversion on digital audio data supplied from the switch
unit 10 of the DSP 8 to analog audio data, and outputs the analog audio data to the volume
adjustment unit 4.
When the switch unit 10 selects the node 10 b and 2 channels of digital audio data are supplied
to the DAC 11, the DAC 11 outputs analog left audio data to the volume adjustment unit 4 L and
outputs analog right audio data to the volume adjustment unit 4 R . On the other hand, when the
switch unit 10 selects the node 10a and 6 channels of digital audio data are supplied to the DAC
11, the DAC 11 converts the analog left audio data to the volume adjustment unit 4L and the
analog right audio data to the volume adjustment unit 4R. , And outputs analog low-pass audio
data to the volume adjustment unit 4SW (Similarly, the DAC 11 also outputs analog center audio
data, analog surround left audio data, and analog surround right audio data to the corresponding
volume adjustment unit 4) .
[0033]
The AV amplifier 100 is provided with a mode called direct mode. In direct mode, when 2
channels of analog audio data or digital audio data are input, the audio processing unit 9
generates 6 channels of digital audio data and reproduces 6 channels of audio instead of
processing 6 channels of audio data. In this mode, only the left speaker SL and the right speaker
SR are directly output without being processed by the unit 9. In the direct mode, although the
sound can not be reproduced from the center speaker SC, the low frequency speaker SSW, the
surround left speaker SSL, and the surround left speaker SSR, the sound quality of the sound
reproduced from the left speaker SL and the right speaker SR can be improved For example, to
reduce noise and distortion).
[0034]
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10
Whether the direct mode is turned on or off is set by the user operation, and the setting content
is stored in the memory 13. When setting the direct mode, for example, a direct mode setting
screen as shown in FIG. 3 is displayed on the display unit 14 and can be set to the on state or the
off state by the user operation. FIG. 3A shows the case where the direct mode is set to the on
state, and FIG. 3B shows the case where the direct mode is set to the off state.
[0035]
Further, the AV amplifier 100 is provided with a setting of use or non-use of a speaker. For
example, as shown in FIG. 4, a setting screen for use / non-use of the low frequency speaker SSW
is displayed on the display unit 14. When the user desires to use the low frequency speaker SSW,
the user operation is set to “YES (used)” as shown in FIG. 4A, and the user does not desire to
use the low frequency speaker SSW. Is set to "NO (not used)" by the user operation as shown in
FIG. 4 (b). The setting contents are stored in the memory 13 and used for various processes such
as distance setting, delay time setting, and signal processing setting.
[0036]
In the present embodiment, when the setting of use / non-use of the low-frequency speaker SSW
is set to “YES”, the control unit 1 causes the display unit 14 not to display the setting screen of
the direct mode shown in FIG. It prohibits direct mode from being set from off to on by user
operation. As a result, when the user desires the audio reproduction from the low frequency
speaker SSW, the direct mode is not set to the on state, so the direct mode is erroneously set to
the on state and the audio is not reproduced from the low frequency speaker SSW Can be
prevented. Note that the setting screen of the direct mode may not be displayed on the display
unit, but may be displayed as graying out (displayed in a color different from that of the normal
display and notifying setting prohibition).
[0037]
On the other hand, when the setting of the use / non-use of the low-frequency speaker SSW is set
to “NO”, the control unit 1 causes the display unit to display the setting screen of the direct
mode shown in FIG. Allow mode to be set to on state. As a result, when the user does not want
09-05-2019
11
the audio reproduction from the low frequency speaker but wants the audio reproduction in the
direct mode, the direct mode is set to the on state, whereby the left speaker SL and the right in
the direct mode Audio can be reproduced only from the speaker SR.
[0038]
In addition, when the direct mode is set to the on state, the control unit 1 automatically performs
the direct mode when the setting of use / non-use of the low frequency speaker SSW is changed
from “NO” to “YES” by the user operation. By changing the setting from the on state to the
off state, control is made such that the sound is reproduced from the low frequency speaker SSW.
[0039]
The operation of the AV amplifier 100 having the above configuration will be described.
First, with reference to FIG. 2, processing of audio data in the case where the direct mode is on
and off will be described. [When direct mode is on and analog left audio data and analog right
audio data are input] According to an instruction from the control unit 1, the switch unit 2
selects the volume adjustment unit 4L side (node 2a) and switches The unit 3 selects the volume
adjustment unit 4R side (node 3a). As a result, the input analog left audio data is supplied to the
volume adjustment unit 4L via the switch unit 2. The volume adjustment unit 4L adjusts the
volume level of the analog left audio data and supplies it to the amplification processing unit 5L.
The amplification processing unit 5L amplifies the supplied analog left audio data, and outputs
the amplified analog left audio data to the left speaker SL connected to the outside through the
left speaker terminal. Also, the input analog right audio data is supplied to the volume adjustment
unit 4 R via the switch unit 3. The volume adjustment unit 4R adjusts the volume level of the
analog right audio data and supplies it to the amplification processing unit 5R. The amplification
processing unit 5R amplifies the supplied analog right audio data, and outputs the amplified
analog right audio data to the right speaker SR externally connected through the right speaker
terminal. As a result, although the audio is not reproduced from the low frequency speaker SSW,
the audio data is not processed by the audio processing unit 9, so that high quality audio can be
reproduced from the left speaker SL and the right speaker SR.
[0040]
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[When direct mode is off and analog left audio data and analog right audio data are input] The
switch unit 2 selects the ADC 6 side (node 2b) according to an instruction from the control unit
1, and the switch unit 3 The ADC 6 side (node 3b) is selected. As a result, the input analog left
audio data is supplied to the ADC 6 through the switch unit 2, and the input analog right audio
data is supplied to the ADC 6 through the switch unit 3. The ADC 6 converts analog left audio
data and analog right audio data into I 2 S format digital audio data, and outputs the digital audio
data to the node 7 a of the switch unit 7.
[0041]
The switch unit 7 selects the ADC 6 side (node 7 a) according to an instruction from the control
unit 1. As a result, the switch unit 7 outputs the digital audio data supplied from the ADC 6 to the
audio processing unit 9 and the switch unit 10 of the DSP 8. The audio processing unit 9 receives
6 channels of digital audio data (digital left audio data, digital right audio data, digital central
audio data, digital low audio data, 6 channels) from the supplied 2 channels of digital audio data
(digital left audio data and digital right audio data). Region audio data, digital surround left audio
data, digital surround right audio data) is generated and output to the node 10 a of the switch
unit 10.
[0042]
The switch unit 10 selects the audio processing unit 9 side (node 10 a) according to an
instruction from the control unit 1. As a result, the switch unit 10 outputs the 6-ch digital audio
data supplied from the audio processing unit 9 to the DAC 11. The DAC 11 converts 6-channel
digital audio data supplied from the switch unit 10 into 6-channel analog audio data (analog left
audio data, analog right audio data, analog center audio data, analog low-pass audio data, analog
surround left audio data, analog It is converted to surround right audio data and output to the
volume adjustment unit 4. For example, analog left audio data is output to the volume adjustment
unit 4L, analog right audio data is output to the volume adjustment unit 4R, and analog lowrange audio data is output to the volume adjustment unit 4SW.
[0043]
The volume adjustment unit 4L adjusts the volume level of the analog left audio data and
supplies it to the amplification processing unit 5L. The amplification processing unit 5L amplifies
09-05-2019
13
the supplied analog left audio data, and outputs the amplified analog left audio data to the left
speaker SL connected to the outside through the left speaker terminal. The volume adjustment
unit 4R adjusts the volume level of the analog right audio data and supplies it to the amplification
processing unit 5R. The amplification processing unit 5R amplifies the supplied analog right
audio data, and outputs the amplified analog right audio data to the right speaker SR externally
connected through the right speaker terminal. The volume adjustment unit 4SW adjusts the
volume level of the analog low-pass audio data and supplies it to the amplification processing
unit 5SW. The amplification processing unit 5SW amplifies the supplied analog low-pass audio
data, and outputs the amplified low-pass audio data to the built-in low-pass speaker SSW. The
sound is similarly reproduced from the center speaker SC, the surround left speaker SSL, and the
surround left speaker SSR. As a result, although the sound quality of the sound reproduced from
the left speaker SL and the right speaker SR is degraded, the sound can be reproduced also from
the low frequency speaker SSW and other speakers.
[0044]
[When direct mode is on and digital left audio data and digital right audio data are input] The DIR
12 converts input SPDIF 2ch digital audio data into I2S format digital audio data, and switches
Output to node 7 b of unit 7. The switch unit 7 selects the DIR 12 side (node 7 b) according to an
instruction from the control unit 1. As a result, the switch unit 7 outputs the digital audio data
supplied from the DIR 12 to the audio processing unit 9 of the DSP 8 and the node 10 b of the
switch unit 10.
[0045]
The switch unit 10 selects the switch unit 7 side (node 10 b) according to an instruction from the
control unit 1. As a result, the switch unit 10 outputs the digital audio data of 2 ch supplied from
the switch unit 7 to the DAC 11. The DAC 11 converts 2-channel digital audio data supplied from
the switch unit 10 into 2-channel analog audio data (analog left audio data and analog right
audio data), and outputs the analog audio data to the volume adjustment unit 4. That is, the
analog left audio data is output to the volume adjustment unit 4L, and the analog right audio data
is output to the volume adjustment unit 4R.
[0046]
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The volume adjustment unit 4L adjusts the volume level of the analog left audio data and
supplies it to the amplification processing unit 5L. The amplification processing unit 5L amplifies
the supplied analog left audio data, and outputs the amplified analog left audio data to the left
speaker SL connected to the outside through the left speaker terminal. The volume adjustment
unit 4R adjusts the volume level of the analog right audio data and supplies it to the amplification
processing unit 5R. The amplification processing unit 5R amplifies the supplied analog right
audio data, and outputs the amplified analog right audio data to the right speaker SR externally
connected through the right speaker terminal. As a result, although the audio is not reproduced
from the low frequency speaker SSW, the audio data is not processed by the audio processing
unit 9, so that high quality audio can be reproduced from the left speaker SL and the right
speaker SR.
[0047]
[Direct mode is off and digital left audio data and digital right audio data are input] DIR 12
converts input SPDIF 2ch digital audio data into I2S format digital audio data, and switches
Output to node 7 b of unit 7. The switch unit 7 selects the DIR 12 side (node 7 b) according to an
instruction from the control unit 1. As a result, the switch unit 7 outputs the digital audio data
supplied from the DIR 12 to the audio processing unit 9 of the DSP 8 and the node 10 b of the
switch unit 10. The audio processing unit 9 receives 6 channels of digital audio data (digital left
audio data, digital right audio data, digital central audio data, digital low audio data, 6 channels)
from the supplied 2 channels of digital audio data (digital left audio data and digital right audio
data). Region audio data, digital surround left audio data, digital surround right audio data) is
generated and output to the node 10 a of the switch unit 10.
[0048]
The switch unit 10 selects the audio processing unit 9 side (node 10 a) according to an
instruction from the control unit 1. As a result, the switch unit 10 outputs the 6-ch digital audio
data supplied from the audio processing unit 9 to the DAC 11. The DAC 11 converts 6-channel
digital audio data supplied from the switch unit 10 into 6-channel analog audio data (analog left
audio data, analog right audio data, analog center audio data, analog low-pass audio data, analog
surround left audio data, analog It is converted to surround right audio data and output to the
volume adjustment unit 4. For example, analog left audio data is output to the volume adjustment
unit 4L, analog right audio data is output to the volume adjustment unit 4R, and analog lowrange audio data is output to the volume adjustment unit 4SW.
09-05-2019
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[0049]
The volume adjustment unit 4L adjusts the volume level of the analog left audio data and
supplies it to the amplification processing unit 5L. The amplification processing unit 5L amplifies
the supplied analog left audio data, and outputs the amplified analog left audio data to the left
speaker SL connected to the outside through the left speaker terminal. The volume adjustment
unit 4R adjusts the volume level of the analog right audio data and supplies it to the amplification
processing unit 5R. The amplification processing unit 5R amplifies the supplied analog right
audio data, and outputs the amplified analog right audio data to the right speaker SR externally
connected through the right speaker terminal. The volume adjustment unit 4SW adjusts the
volume level of the analog low-pass audio data and supplies it to the amplification processing
unit 5SW. The amplification processing unit 5SW amplifies the supplied analog low-pass audio
data, and outputs the amplified low-pass audio data to the built-in low-pass speaker SSW. The
sound is similarly reproduced from the center speaker SC, the surround left speaker SSL, and the
surround left speaker SSR. As a result, although the sound quality of the sound reproduced from
the left speaker SL and the right speaker SR is degraded, the sound can also be reproduced from
the low frequency speaker SSW.
[0050]
Next, display processing of the setting screen of the direct mode will be described. [Process when
a display instruction of a setting screen is input by a user operation] FIG. 5 is a flowchart
showing a process of the control unit 1. The control unit 1 monitors whether or not an
instruction to display a setting screen for performing various settings on the display unit 14 by a
user operation is input (S11). When the instruction to display the setting screen is input (YES in
S11), control unit 1 stores in memory 13 whether or not the use presence / absence setting of
low-pass speaker SSW is set to “YES (use present)”. The determination is made with reference
to the set contents (S12).
[0051]
When it is determined that the use / non-use setting of the low frequency speaker SSW is set to
“NO (not in use)” (NO in S12), the control unit 1 displays the setting screen of the direct mode
as shown in FIG. It is displayed on the display unit 14 (S13). Therefore, the user can set the direct
mode to the on state or the off state. When an instruction to set the direct mode to the on state is
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input by the user operation, the control unit 1 sets the direct mode to the on state, thereby
reproducing the sound with the direct mode on as described above. Do. On the other hand, when
an instruction to set the direct mode to the off state is input by the user operation, the control
unit 1 sets the direct mode to the off state, thereby, as described above, the voice in the direct
mode is off. Is played back (S14).
[0052]
On the other hand, when it is determined that the use / non-use setting of the low frequency
speaker SSW is set to “YES (use present)” (YES in S12), the control unit 1 displays the setting
screen of the direct mode as shown in FIG. Is not displayed on the display unit 14 or grayed out
to prohibit setting of the direct mode to the on state. That is, when the user intends to use the
low frequency speaker, the direct mode can not be changed from the off state to the on state by
the user operation. As a result, when sound reproduction is desired from the low frequency
speaker SSW, it is possible to prevent the sound from being reproduced from the low frequency
speaker SSW because the direct mode is erroneously set to the on state.
[0053]
[Process in the Case where the Use Presence Setting of the Low-Frequency Speaker SSW is
Changed] FIG. 6 is a flowchart showing the process of the control unit 1. The control unit 1
determines whether or not the direct mode is set to the on state with reference to the setting
content stored in the memory 13 (S21). If the direct mode is set to the off state (NO in S21), the
process ends.
[0054]
On the other hand, when the direct mode is set to the on state (YES in S21), control unit 1
determines whether the use / non-use setting of low-pass speaker SSW has been changed from
"NO" to "YES" by user operation. (S22). If the use / non-use setting of the low frequency speaker
SSW is not changed from “NO” to “YES” (NO in S22), the process is ended. When the use /
non-use setting of low-pass speaker SSW is changed from “NO” to “YES” (YES in S22),
control unit 1 automatically changes the setting from the ON state to the OFF state in direct
mode (S23) ). When the direct mode is on, the user desires to play audio from the low frequency
speaker SSW, and the direct mode is on even if the low frequency speaker SSW use / non-use
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setting is set to “YES”. No sound is played from the low frequency speaker SSW. Also, the user
needs to notice the setting of the direct mode and change the setting of the direct mode from the
on state to the off state. However, according to this example, when the use mode setting of the
low frequency speaker SSW is changed to “YES” when the direct mode is on, the direct mode is
automatically changed from on to off. It is possible to prevent the problem that the audio is not
reproduced from the low frequency speaker SSW. Furthermore, there is no need to change the
direct mode to the off state by user operation.
[0055]
As described above, in the AV amplifier 100 in which the low frequency speaker SSW is built, the
direct mode is set to the on state although the user desires to reproduce the sound from the low
frequency speaker SSW. It is possible to prevent the problem that the audio is not reproduced
from the low frequency speaker SSW. The same applies to the case where the low frequency
speaker SSW is not built in and externally connected to the AV amplifier 100, but the effect is
remarkable in the low frequency speaker built-in amplifier.
[0056]
[Another Embodiment] In the above embodiment, the direct mode setting screen is not displayed
when the use / non-use setting of the low frequency speaker SSW is "YES", but in this example,
the AV amplifier 100 is the central speaker The use mode of SC can be set and the setting mode
of direct mode is not displayed when the use mode of center speaker SC is "YES" and the direct
mode is used when the use mode of center speaker SC is "NO" Make the setting screen of. The
processing and setting screen of the control unit 1 will be omitted because the low frequency
speaker SSW is replaced with the central speaker SC in the above embodiment. This example can
be suitably applied to, for example, a TV rack provided with an AV amplifier, a left speaker SL, a
right speaker SR, and a center speaker SC. Similarly, the setting screen of the direct mode may
not be displayed when the use / non-use setting of the surround left speaker SSL and / or the
surround left speaker SSR is “YES”.
[0057]
Although the preferred embodiments of the present invention have been described above, the
present invention is not limited to these embodiments. For example, as a method of prohibiting
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setting the direct mode from the off state to the on state, when the housing of the AV amplifier
100 or the remote control is provided with a button for switching the on / off state of the direct
mode, the button Even if pressed, the direct mode may not be switched to the on state, and that
effect may be notified to the display unit. When the direct mode is off, the audio processing unit
9 may generate 3 channels of digital audio data (left audio data, right audio data, low frequency
audio data) or audio data of 7 channels or more instead of 6 channels. Also, the digital audio data
is not limited to the I2S format. In addition, the display unit 14 may be an OSD output unit that
displays a direct mode setting screen or a speaker setting screen on the display device 200 as an
OSD (On Screen Display). Also, the audio data to be input is not limited to the audio data from the
DVD player, and may be audio data from other source devices or audio data included in the TV
signal. Further, the present invention is applicable not only to an AV amplifier but also to a
display device, a game machine, and the like. The program may also be provided in the form of a
program for causing a computer to execute the above operation of the AV amplifier 100 and a
recording medium recording the program. Also, the program for only a part of the above
operation of the AV amplifier may be provided to the AV amplifier in the form of firmware
update. Furthermore, the program may be provided in the form of an electronic component such
as a control unit in which a program of only a part of the operation of the AV amplifier is stored.
[0058]
The present invention can be suitably adopted for audio equipment such as an AV amplifier.
[0059]
It is a figure explaining arrangement | positioning of AV amplifier 100 and a speaker.
FIG. 2 is a block diagram showing a configuration of an AV amplifier 100. It is a figure which
shows a direct mode setting screen. It is a figure which shows the use presence setting screen of
a low-pass speaker. 5 is a flowchart showing processing of a control unit 1; 5 is a flowchart
showing processing of the control unit 1
Explanation of sign
[0060]
100 AV amplifier 1 control unit 2 switch unit 3 switch unit 4 volume adjustment unit 5
amplification processing unit 6 ADC 7 switch unit 8 DSP 9 audio processing unit 10 switch unit
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11 DAC 12 DIR 13 memory 14 display unit 15 operation unit
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