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JP2002171600

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2002171600
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio output apparatus capable of easily performing volume setting when, for example,
connecting a plurality of speakers to form a surround system, and a volume setting method
thereof.
[0002]
2. Description of the Related Art As a disc-shaped recording medium capable of recording data
such as video and audio of one movie while being a disc (12 cm in diameter) of the same size as a
CD (Compact Disc), for example, DVD (Digital) Versatile Disk / Digital Video Disk) is known.
[0003]
By the way, in video software etc. using DVD as a recording medium, it is called Dolby Digital
(Dolby AC-3) (trademark) so that it can enjoy three-dimensional and powerful sound compared to
ordinary two-channel stereo reproduction. Audio standard (surround method) is adopted.
In the case of such a surround system, in addition to the audio data of 5 channels consisting of
the front 3 channels and the rear 2 channels, the audio data of the subwoofer channel whose
band is limited only in the low band is recorded on the DVD There is. In addition, since such a
surround system consists of 5 channels of front side 3 channels + rear side 2 channels and
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subwoofer channels (counting with 0.1 channel), 5.1 channel surround system (hereinafter
referred to as “5. It is also called "1ch surround system".
[0004]
By the way, in order to realize reproduction of surround sound in the above-mentioned 5.1ch
surround system, for example, a DVD player compatible with 5.1ch surround and each sound
data output The three front speakers (left, center, right), two rear speakers (left, right), and one
low-frequency speaker (subwoofer) are prepared as the speakers, and these six speakers It is
necessary to set the sound field corresponding to 5.1ch surround using. The conditions for such
5.1 channel surround sound field settings differ depending on the user's use environment, etc., so
the user refers to the manual etc., but such sound field settings are as follows: It was a very
laborious task for some reasons.
[0005]
For example, when the user sets a 5.1 channel surround sound field according to a manual, six
speakers (including subwoofers) are arranged at appropriate positions based on the viewing
position viewed by the user themselves. Had to do the installation work of However, in such a
speaker installation operation, it is required for the left and right speakers to be arranged
symmetrically, which is a very troublesome operation for the user.
[0006]
After installing the speakers as described above, the volume setting operation for setting the
volume of each speaker is performed. In the volume setting operation of the speakers, in order to
balance the volume of each speaker, it is necessary to input the distance from the user's viewing
position to each speaker. However, it is difficult for the user who does not have any measuring
means to measure the accurate distance to each speaker, and eventually the user balances the
volume by adjusting the volume of each speaker repeatedly by relying on the sense of hearing. I
had no choice but to take.
[0007]
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2
Therefore, it is impossible to move the DVD player, for example, to another room after
performing the 5.1 ch surround sound field setting as described above and to newly perform the
sound field setting. From such a point of view, a portable DVD player called a so-called
transportable type is equipped with only a virtual surround system which does not require sound
field setting, and is an apparatus compatible with the above-mentioned 5.1 ch surround system
There was no.
[0008]
SUMMARY OF THE INVENTION Therefore, the present invention has been made in view of the
above-described points, and an audio output device capable of outputting a predetermined
surround sound, comprising an apparatus provided with a plurality of speakers A main body, a
center speaker, and a connection cable connecting the device main body and the center speaker
are provided, and a measurement site for measuring the distance between the device main body
and the center speaker is formed in the connection cable.
[0009]
Further, according to the present invention, there is provided a measurement site for connecting
a device body provided with at least a left speaker and a right speaker, a center speaker, the
device body and the center speaker, and measuring the distance between the device body and the
center speaker. As a volume setting method of the audio output device including the formed
connection cable, when the center speaker is disposed on the front side of the viewing position
and the device body is disposed on the rear side of the viewing position, the volume level of the
center speaker The volume setting of the left and right speakers is performed based on the
distance between the viewing position and the center speaker, which is input based on the
measurement portion of the connection cable, and the distance between the viewing position and
the device body. .
[0010]
According to such an audio output device, for example, when the device main body is disposed
on the back side of the viewing position, and the center speaker and the left and right front
speakers are disposed on the front side of the viewing position, the predetermined surround
system is formed. The distance from the viewing position to the device body and the distance
from the viewing position to the center speaker required for setting the volume of the left and
right rear speakers provided in the device body based on the measurement site (scale) formed on
the connection cable It becomes possible to enter the distance of
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[0011]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below.
In the present embodiment, the case where the audio output apparatus of the present invention
is applied to a DVD player will be described as an example.
FIG. 1 shows an example of a 5.1 ch surround system constructed using the DVD player
according to the present embodiment.
The DVD player 1 of the present embodiment shown in FIG. 1 is composed of an apparatus main
body 2 and a center speaker unit 3.
[0012]
The device body 2 incorporates two speakers 5 and 6 for the left and right channels and a
speaker for bass (hereinafter referred to as “subwoofer”) 7. The center speaker unit 3 is
provided with, for example, a center speaker 3a and a light receiving unit for receiving a remote
control light reception signal from the remote commander 8 which is not shown in the drawing.
In this case, the center speaker 3a and the speakers 5 and 6 of the device body 2 are configured
by the same speaker in order to match the sound quality.
[0013]
The device body 2 and the center speaker unit 3 are connected by a dedicated cable 4. The
dedicated cable 4 is formed by one cable obtained by bundling a plurality of signal lines, and a
scale 9 (scale) as shown in the enlarged view of FIG. . The method of using the scale 9 printed on
the dedicated cable 4 will be described later. The dedicated cable 4 transmits, for example, a
signal line for inputting an audio signal from the device body 2 to the center speaker 3a, and a
remote control light reception signal received by a light receiving unit (not shown) of the center
speaker unit 3 to the device body 2 And a signal line for transmitting a video signal and an audio
signal input to a monitor device such as the television receiver 10 via the speaker unit 3.
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[0014]
The center speaker unit 3 is also connected to the television receiver 10 via the AV cable 11. The
AV cable 11 includes various signal lines for transmitting to the television receiver 10 video
signals and audio signals supplied from the device main body 2 to the center speaker unit 3 via
the dedicated cable 4, and the center speaker unit 3. A signal line or the like for transmitting the
remote control light reception signal received by the light reception unit to the television receiver
10 is provided. Therefore, the center speaker unit 3 also has a function as a light receiving unit
of the television receiver 10 and a function of relaying a video signal and an audio signal
supplied from the device main body 2 to the television receiver 10. .
[0015]
The television receiver 10 is configured to display a reproduced image reproduced by the DVD
player 1 according to the present embodiment and output a reproduced sound. For this reason,
the television receiver 10 is provided with a display portion (not shown) for displaying a
reproduced image, and a left speaker 12 and a right speaker 13 for outputting reproduced
sound.
[0016]
The remote commander 8 is provided with operation buttons, setting buttons, and the like for
performing operations and various settings of the DVD player 1 and the television receiver 10
according to the present embodiment. Then, when the user operates a required button, for
example, a command signal by infrared (IR: Infrared) is sent out.
[0017]
When a 5.1 ch surround system is configured by the DVD player 1 and the television receiver 10
of the present embodiment as described above, as shown in FIG. 1, television reception is
performed in front of the viewer's viewing position LP. The device 10 and the center speaker unit
3 are disposed, and the device body 2 of the DVD player 1 is disposed behind them. That is, in
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this case, the left speaker 12 and the right speaker 13 of the television receiver 10 become the
left front speaker and the right front speaker, and the speaker 5 built in the device body 2 is the
left rear speaker (left surround speaker) 6 becomes a right rear speaker (right surround speaker).
The four speakers, the center speaker 3a, and the subwoofer 7 incorporated in the device main
body 2 arrange six speakers for configuring a 5.1ch surround system.
[0018]
That is, in the present embodiment, the television receiver 10 and the center speaker unit 3 are
disposed in front of the viewer, and the device main body 2 is disposed behind the television
receiver 10. Speakers can be arranged. In this case, since the left and right front speakers are
built in the television receiver 10 as the built-in speakers 12 and 13 and the left and right rear
speakers are built in the built-in speakers 5 and 6 of the device body 2, the television receiver 10
and the device body 2 The left and right front speakers and the rear speakers are arranged
symmetrically in the left-right direction only by That is, it becomes possible to arrange left and
right front speakers and rear speakers in a symmetrical manner without bothering the user.
[0019]
Although in FIG. 1 the center speaker unit 3 is shown to be disposed on the front side of the
television receiver 10 for the sake of space, in practice the sound emission surface of the center
speaker 3a and the television It is preferable to arrange the center speaker 3a so that the sound
emitting surfaces of the left and right speakers 12, 13 of the television receiver 10 are on the
same plane.
[0020]
FIG. 2 is a diagram showing the configuration of main blocks of the DVD player and the television
receiver according to the present embodiment.
Digital audio data reproduced from a DVD or the like in a pre-stage block (not shown) is input to
the decoder 21 of the device body 2 shown in FIG. The decoder 21 is composed of, for example, a
DSP (digital sound processor), etc., and when the input audio data is audio data of Dolby Digital
format or DTS (Digital Theater System (trademark)) format, 5.1 channel Audio data is to be
demodulated. That is, the decoder 21 demodulates the audio data of the left and right front
channels, the audio data of the left and right rear channels (surround audio data), the audio data
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of the center channel, and the audio data of the subwoofer channel from the input audio data. It
will be. Further, the decoder 21 can delay and output the audio data of the front channel or the
rear channel by a predetermined time based on the control of the system microcomputer 31.
[0021]
The DTS format is a digital audio system for theaters developed by Digital Theater Systems, Inc.
in the United States, and while the Dolby Digital format described above is the standard format of
DVD, the DTS format is an optional format. It is defined.
[0022]
The 5.1 channel audio data demodulated in the decoder 21 is converted to an analog audio signal
in the D / A converter (DAC) 22, and then input to the main volume 23 to perform level
adjustment.
[0023]
Among the audio signals whose level has been adjusted in the main volume 23, the audio signal
of the subwoofer channel is further level-adjusted by the volume 24, then amplified to a
predetermined level in the subwoofer amplifier 25, and output from the subwoofer 7.
The audio signals of the left and right rear channels are level-adjusted by the volume 26,
amplified to a predetermined level by the L / R amplifier 27, and then output from the speakers
5 and 6 via the switch 30.
Similarly, the audio signal for the center channel is level-adjusted by the volume 28, then
amplified to a predetermined level by the amplifier 29 for the center speaker, and output from
the center speaker 3a.
[0024]
Further, the audio signals of the left and right front channels output from the main volume 23
are supplied to the television receiver 10 through the center speaker unit 3 and in the volumes
61 and 64 provided in the television receiver 10, After each level adjustment, they are input to
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an L (left) amplifier 62 and an R (right) amplifier 64. Then, after being amplified to a
predetermined level by the L and R amplifiers 62 and 64, they are outputted from the left and
right speakers 12 and 13.
[0025]
The switch 30 is a switch that switches an audio signal input to the speakers 5 and 6, and the
switching is controlled by the system microcomputer 31. For example, as shown in FIG. 1, when
the device main body 2 is disposed at the rear side to configure a 5.1 ch surround system, the
audio signal of the left rear channel output from the L / R speaker amplifier 27 is the speaker 5
Audio signals of the right rear channel are input to the speakers 6 and output from the speakers
5 and 6.
[0026]
For example, when the device main body 2 is disposed on the front side, under control of the
system microcomputer 31, audio signals of the left and right front channels output from the
decoder 21 are supplied to the R / L speaker amplifier 27 via the volume 26. Thus, the speakers
5, 6 output sound corresponding to the left and right front channels. However, since the left and
right positions of the left and right speakers 5 and 6 when the device body 2 is disposed on the
front side of the viewer and the left and right positions of the left and right speakers 5 and 6
when the device body 2 is disposed on the rear side are opposite. When the device body 2 is
disposed on the front side, the switch 30 is switched by the system microcomputer 31 so that the
audio signal of the left channel output from the L / R speaker amplifier 27 is transmitted to the
speaker 6 and the audio of the right channel. A signal is input to the speaker 5.
[0027]
In the present embodiment, main operations of the DVD player 1 and the television receiver 10
are performed by the remote commander 8. For this reason, the center speaker unit 3 is provided
with a light receiving unit 32 for receiving an infrared signal from the remote commander 8. The
command signal received by the light receiver 32 is supplied to the system microcomputer 31 of
the device body 2. The system microcomputer 31 controls the entire DVD player 1 and performs
necessary operation control according to a command signal from the light receiving unit 32.
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[0028]
Although not shown in the drawing, the command signal received by the light receiving unit 32
is also supplied to the system microcomputer of the television receiver 10, and the television
receiver 10 also performs required operation control according to the command signal. Has been
done.
[0029]
The setting operation for configuring a 5.1 ch surround system using the DVD player 1 and the
television receiver 10 of the present embodiment will be described below.
[0030]
As described above, the operation of the present embodiment is performed by the remote
commander 8.
Therefore, the configuration of the remote commander 8 will be briefly described first with
reference to FIG.
FIG. 3 is a plan view showing an example of the appearance of the DVD player 1 remote
commander 8 according to the present embodiment. In the present embodiment, only the
operation buttons necessary for the setting operation for realizing the 5.1 ch surround system
will be described, and the description of the other operation buttons will be omitted.
[0031]
FIG. 3 (a) is a plan view showing an example of the appearance with the remote control cover of
the remote commander closed, and FIG. 3 (b) is a plan view showing an example of the
appearance with the remote control cover of the remote commander opened. is there. In the
upper part of the remote commander 8 shown in FIGS. 6A and 6B, an IR signal transmitter 41 for
transmitting an IR (infrared) signal corresponding to various button operations described later is
provided. The power button 42 and the television power button 43 are buttons operated when
the DVD player 1 and the television receiver 10 are powered on or off, respectively.
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9
[0032]
The numeral buttons 44 which function when the remote control cover 8a is closed shown in
FIG. 3A are buttons operated when inputting the numerals displayed on the respective buttons.
[0033]
Further, volume +/- buttons 45 shown in FIGS. 3A and 3B are buttons operated when adjusting
the volume, and a DVD menu button 46 displays a menu for performing various settings of the
DVD. It is a button operated when making it
The up button (upper button) 47, the down button (down button) 48, the left button (left button)
49, and the light button (right button) 50 move the cursor etc. displayed on the screen of the
television receiver 10 up and down. It is a button operated to move left and right to select an
item displayed on the screen, and the decision button (select button) 51 is a button operated to
decide the selected item.
[0034]
Further, among the buttons that function when the remote control cover 8a is open shown in FIG.
3B, the test tone button 52 is a button operated when outputting a test tone. The level +/- button
53 is a button operated to finely adjust the volume of the center speaker, rear speaker and
subwoofer, and +/- for adjusting the volume level of the center speaker, rear speaker and
subwoofer respectively. A button is provided.
[0035]
Hereinafter, an example of a setting method in the case of configuring a 5.1 ch surround system
by the operation of the above-described remote commander 8 will be described with reference to
FIGS. 4 to 7. The setting described below is premised on that the DVD player 1 and the television
receiver 10 are arranged as shown in FIG.
[0036]
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10
When setting 5.1ch surround, the user first presses the DVD menu button 46 of the remote
commander 8 to display, for example, a menu item of the DVD on the screen of the television
receiver 10, although not shown. . Then, by selecting and determining, for example, an item of
sound volume adjustment from among menu items of the DVD, the sound volume adjustment
screen of the speaker is displayed.
[0037]
When the screen shifts to the volume adjustment screen of the speaker, the screen 10a of the
television receiver 10 displays a main body position selection screen as shown in FIG. 4A. The
main body position selection screen shown in FIG. 4A is an input screen for inputting which
position on the front side or rear side of the viewing position LP the device main body 2 of the
DVD player 1 of the present embodiment is arranged Be done. Here, since the device body 2 is
disposed on the rear side, the user selects and determines the item of “REAR” displayed on the
screen 10. By this, it will shift to the volume setting mode of 5.1ch surround. The operation for
selecting and determining the items displayed on the screen 10 a of the television receiver 10 is
performed by the left button 49 and the light button 50 of the remote commander 8 and the
determination button 51.
[0038]
When transitioning to the volume setting mode, a distance input screen as shown in FIG. 4B is
displayed on the screen 10a. The distance input screen shown in FIG. 4B is an input screen for
inputting a distance A from the viewing position LP of the viewer to the center speaker unit 3
and a distance B from the viewing position LP of the viewer to the device main body 2 Be done.
[0039]
In the present embodiment, as shown in FIG. 1, a scale 9 (scale) is printed on a dedicated cable 4
connecting the device body 2 and the center speaker unit 3. Therefore, the user can grasp the
distance A from the viewing position LP to the center speaker unit 3 and the distance B to the
device body 2 by using the scale 9 printed on the dedicated cable 4 as a guide.
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[0040]
Such input of the distances A and B is performed by, for example, the number button 44 of the
remote commander 8 or the like. Then, after inputting the distances A and B, by operating the
determination button 51, the volume setting screen of the front speakers as shown in FIG. 5A is
displayed on the screen 10a of the television receiver 10. Ru.
[0041]
The volume setting screen of the front speaker shown in FIG. 5A is a screen for prompting the
user to set the volume of the front speaker. In the present embodiment, since the left and right
front speakers are the left and right speakers 12 and 13 of the television receiver 10, the volume
speaker +/- button 45 of the remote commander 8 is used on the screen 10a. The display
prompting you to adjust the volume of the Then, after the user adjusts the volume of the speaker
of the television to an appropriate level with the volume +/- button 45 of the remote commander
8 according to the screen display, when the determination button 51 is pressed, the screen 10a is
displayed as shown in FIG. The volume setting screen of the center speaker as shown in b) is
displayed.
[0042]
In the volume setting screen of the center speaker shown in FIG. 5B, the remote control cover 8a
is opened, and the volume of the center speaker is the same as the volume of the front speaker
by the center +/- button of the level +/- button 53 inside. A display prompting the user to adjust
the volume is displayed. Here, when the user adjusts the volume of the center speaker 3a with
the center level +/− button according to the display on the screen 10a and then presses the
decision button 51, the screen 10a is shown in FIG. 6A. A screen is displayed indicating that basic
volume settings for 5.1ch surround have been completed.
[0043]
After the basic volume setting end screen shown in FIG. 6A is displayed, a volume fine
adjustment screen as shown in FIG. 6B, for example, is displayed. The volume fine adjustment
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screen shown in FIG. 6B is a screen for confirming whether or not the volume setting of each
speaker is appropriate. Here, when the user presses the test tone button 52 of the remote
commander 8 according to the display on the screen 10a, the left front speaker 12 to the center
speaker 3a → right front speaker 13 → right rear speaker 6 → subwoofer 7 → left rear speaker
5 The test tone of the volume level set from each speaker is output in the order of left
counterclockwise. The output order of such test tones is merely an example, and the test tone of
the center speaker 3a and the test tone of another speaker may be alternately output.
[0044]
When the user wants to finely adjust the volume levels of the left and right rear speakers 5 and 6
and the subwoofer 7 by listening to the test tone, the volume +/− button 53 is used to adjust the
volume of each speaker. Be done. Then, after the fine adjustment of the left and right rear
speakers 5 and 6 and the subwoofer 7 is finished, when the determination button 51 is pressed,
the next setting screen as shown in FIG. 7A is displayed on the screen 10a. This screen 10a is a
selection screen for selecting whether or not to perform the volume setting as has been
performed until now. For example, when the volume setting is not to be performed next time, the
item "No" is selected, and the volume is also set next time When doing, the item "YES" is selected.
That is, when the user moves the DVD player 1 of the present embodiment to another room, etc.,
and rebuilds the 5.1ch surround system again, the user selects the item “YES” to select the
item again next time. Such settings can be made.
[0045]
Then, after the operation to decide whether to perform the next volume setting on the next
setting screen shown in FIG. 7A, the volume setting end screen as shown in FIG. 7B is displayed
on the screen 10 and the volume is displayed. The setting will end.
[0046]
Thus, in the DVD player 1 of the present embodiment, when the 5.1ch surround system is to be
realized, left and right front speakers (left and right speakers 12 of the television receiver 10, It
becomes possible to perform the volume setting of all the speakers which comprise a 5.1ch
surround system only by performing volume setting of 13) and the center speaker 3a.
[0047]
This is because, as described above, in the DVD player according to the present embodiment, the
device main body 2 incorporating the two speakers 5 and 6 and the subwoofer 7 can be used as
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a rear of the viewing position LP when constructing the 5.1ch surround system. It is supposed to
be placed on the side.
[0048]
That is, by arranging the device body 2 on the rear side, the viewer's viewing position LP can be
positioned on any one of the central axes of the isosceles triangle formed by the center speaker
3a and the left and right rear speakers 5, 6. Therefore, if the distance A from the viewing position
LP to the center speaker 3a and the distance B to the device body 2 are known, the distances to
the left and right rear speakers 5 and 6 can be known.
Then, if the distances to the left and right rear speakers 5 and 6 are known, the volume of the
speakers and the distance are in inverse proportion to each other. Therefore, from the volume of
the center speaker 3a and the distance A to the center speaker 3a , 6 can be determined by
calculation.
That is, it becomes possible to automatically set the volume of the left and right rear speakers 5
and 6 arranged on the rear side.
[0049]
Further, since the subwoofer 7 is also integrally formed in the device body 2, it is possible to set
the volume of the subwoofer 7 by multiplying the gains of the left and right rear speakers 5 and
6 by a constant coefficient. .
[0050]
In particular, in the present embodiment, the scale 9 is formed on the coated surface of the
dedicated cable 4 connecting the device body 2 and the center speaker unit 3, so that the user
can view the scale 9 of the dedicated cable 4 only Since the distance B from the viewing position
LP to the device body 2 and the distance from the viewing position LP to the center speaker 3a
can be easily grasped, it is possible to easily perform the volume setting as described above.
[0051]
Although it is conceivable to attach, for example, a tape measure or the like as an accessory
component instead of forming the scale 9 on the dedicated cable 4 as in the present embodiment,
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in that case there is a risk of losing it. If, as in the present embodiment, the scale 9 is formed on
the dedicated cable 4 which is always in use, such a problem does not occur.
[0052]
By the way, as a general surround environment, it is desirable that the distance from the viewing
position LP to the front side speaker and the rear side speaker be equal.
However, in a general home where the installation space is limited, it is difficult to equalize the
distance from the viewing position LP to the front speaker and the rear speaker.
Therefore, in the present embodiment, the distance difference between the front speaker and the
rear speaker is obtained from the distances A and B input for setting the volume.
When the distance from the viewing position LP to the front speaker is different from the
distance from the viewing position LP to the rear speaker, the audio data input to the speaker
closer to the viewing position LP is 3 msec, for example, in the decoder 21. It is also possible to
set a surround environment as if the front speakers and the rear speakers are at an equal
distance by delaying by / M.
[0053]
Subsequently, based on the above description, the processing operation for realizing the abovedescribed volume setting will be described using the flowcharts of FIGS. 8 and 9.
This process is realized by the system microcomputer 31 executing it. The volume setting for
5.1ch surround as described above is, for example, a menu item of the DVD displayed by the user
pressing the DVD menu button 46 of the remote commander 8 shown in FIG. Are selected and
determined, for example, from the item of volume adjustment.
[0054]
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15
First, in step S101, the system microcomputer 31 executes display control for displaying the
main body position selection screen as shown in FIG. 4A on the screen 10a of the television
receiver 10. In the subsequent step S102, it is determined whether or not the position of the
device main body 2 is on the rear side on the main body position selection screen shown in FIG.
4A. Note that such determination as to whether or not the rear side is made as described above,
as the user performs an operation to select and determine the item "Rear" or "Front" displayed on
the main body position selection screen. Ru.
[0055]
If a negative result is obtained in step S102, that is, if the device body 2 is disposed on the front
side, the process proceeds to step S103. In this case, since there is no need to set the volume for
5.1ch surround, the system microcomputer 31 is a main body speaker, for example, using the
speaker 5 of the device main body 2 as the right front speaker and the speaker 6 as the left front
speaker. The setting process is performed and the process ends.
[0056]
On the other hand, when an affirmative result is obtained in step S102, the process proceeds to
step S104, and display control for displaying the input screen of the distances A and B shown in
FIG. 4B is executed. In the subsequent step S105, it is determined whether or not the
determination operation of the distances A and B is performed, and when it is determined that
the determination operation of the distances A and B is performed, the process proceeds to step
S106 to set the distances A and B. Execute control processing to
[0057]
Next, in step S107, the system microcomputer 31 executes display control for displaying the
volume setting screen of the front speakers 12 and 13 as shown in FIG. 5A on the screen 10a of
the television receiver 10. Do. Then, in the subsequent step S108, it is determined whether or not
the volume determination operation of the front speakers 12 and 13 has been performed. Here,
when it is determined that the volume determination operation of the front speakers 12 and 13
is performed, the process proceeds to step S109 to set, for example, the volume of the television
receiver 10 as processing for setting the volume of the front speakers 12 and 13. Execute control
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to set the volume level of 61, 63. The setting processing of the volume levels of the volumes 61
and 63 may be performed by a system microcomputer on the television receiver side.
[0058]
In the following step S110, the display control for displaying the volume setting screen of the
center speaker 3a as shown in FIG. 5B is executed, and in the subsequent step S111, the volume
determining operation of the center speaker 3a is performed. If it is determined that the volume
determination operation of the center speaker 3a has been performed, the process proceeds to
step S112, and for example, the volume level of the volume 28 is set as processing for setting the
volume of the center speaker 3a. To perform control.
[0059]
Then, in step S113, the system microcomputer 31 determines the subwoofer 7 of the left and
right rear speakers 5, 6 provided on the device body 2 based on the distances A, B and the
volume level of the center speaker set up to this point. Execute control to set the volume level of.
Since the volume and distance of the speakers are in inverse proportion to each other, as
described above, the volume level of the center speaker 3a, the distance A from the center
speaker 3a to the viewing position LP, and the viewing position LP If the distance B to the device
body 2 is known, the optimal volume level of the rear speakers 5 and 6 and the subwoofer 7 can
be easily obtained by calculation.
[0060]
Then, after setting the volume of the left and right rear speakers 5 and 6 and the subwoofer 7 in
step S113, the process proceeds to step S114, and a display for displaying the basic volume
setting screen as shown in FIG. Execute control.
[0061]
After the display control of step S114, the process proceeds to step S115 shown in FIG. 9, and
the system microcomputer 31 executes the display control for displaying the volume fine
adjustment screen as shown in FIG. 6 (b). Do.
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Then, in the subsequent step S116, it is determined whether or not the test tone has been
operated. When it is determined in step S116 that an operation for test tone output has been
performed, the process proceeds to step S117, and for example, the left front speaker 12 to the
center speaker 3a → right front speaker 13 → right rear speaker 6 → subwoofer 7 → Control is
performed such that a test signal is output to the left around the left rear speaker 5 in order. In
the following step S118, it is determined whether or not the fine adjustment operation has been
performed. If the fine adjustment operation has been performed, the process proceeds to step
S119, and the volume setting is performed based on the fine adjustment.
[0062]
That is, when the center +/− button of the level +/− buttons 53 provided on the remote
commander 8 is operated, the center speaker 3a previously set in step S113 according to the
operation amount. Execute control to reset the volume of. Similarly, when the rear +/- buttons of
the level +/- buttons 53 are operated, control is performed to reset the volume of the left and
right rear speakers 5 and 6 in accordance with the operation amount. At the same time, when the
subwoofer 7 +/− button is operated, control is performed to reset the volume of the subwoofer
7 in accordance with the amount of operation.
[0063]
Then, in the subsequent step S120, it is determined whether or not the operation of the
determination button 51 of the remote commander 8 has been performed, and if a negative
result is obtained, the process returns to step S117 and the process from step S117 is repeated.
It will be. When a negative result is obtained for the operation for fine adjustment in step S118,
the process of step S119 is skipped and the process proceeds to step S120.
[0064]
When a negative result is obtained in step S116, the process proceeds to step S121, and it is
determined whether the operation of the determination button 51 of the remote commander 8 is
performed. When a negative result is obtained, the process proceeds to step S116. The process
from step S116 is repeatedly performed.
[0065]
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On the other hand, when a positive result is obtained in step S120 and step S121, the process
proceeds to step S122 to execute display control for displaying the next setting screen as shown
in FIG. 7A. Do.
Then, in the subsequent step S123, it is determined whether or not the volume setting is to be
performed next time, and when an affirmative result is obtained here, the process proceeds to
step S124 to set the register, and then in the subsequent step S125. The display control for
displaying the volume setting end screen shown in FIG. 7B is executed. When a negative result is
obtained in step S123, the process proceeds to step S125 without performing the process of step
S124. Then, after the display control in step S125 is performed, the volume setting process
according to the present embodiment ends.
[0066]
In the embodiment described above, the case where the audio output device of the present
invention is applied to a DVD player is described as an example, but this is merely an example,
and the audio output device as the present invention is not limited to five. Of course, the present
invention can be applied to an AV amplifier compatible with 1ch surround sound.
[0067]
Further, in the present embodiment, the 5.1ch surround system is configured using the left and
right speakers 12 and 13 of the television receiver 10, but it is possible to use other speakers as
left and right front speakers. .
[0068]
Further, the operation procedure and control process for volume setting of the present
embodiment described above are merely examples, and various operation procedures and control
processes for volume setting of the audio output device of the present invention are conceivable.
It is.
For example, if the left and right front speakers and the center speaker are configured by the
same speaker, the 5.1ch surround system is configured only by setting the volume level of either
the front speaker or the center speaker and inputting the distances A and B. can do.
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[0069]
Further, although the 5.1ch surround system has been described as an example in the present
embodiment, the present invention is applicable to various surround systems in which speakers
are arranged at least on the front side and the rear side of the viewer. It goes without saying that
there is one.
[0070]
As described above, in the audio output device of the present invention, since the scale is formed
in the connection cable connecting the device body and the center speaker, for example, the
device body is disposed on the back side of the viewing position When the center speaker and
the left and right front speakers are arranged on the front side of the viewing position to form a
predetermined surround system, the device body is viewed from the viewing position based on
the measurement site (scale) formed on the connection cable Since it is possible to easily and
reliably input the distance to the center speaker and the distance to the center speaker from the
viewing position, it is possible to easily set the sound field of the surround system.
[0071]
Therefore, if such an audio output device of the present invention is applied to, for example, a
portable type DVD player, the sound field of a predetermined surround system can be easily reset
even when the DVD player is moved. As a result, full-scale surround sound can be enjoyed even
in portable type DVD players and the like.
[0072]
Further, according to the present invention, since the switching means for switching the input
lines of the left and right speakers provided in the device main body is provided, the device main
body is disposed at any position on the front side or the back side But there is also the advantage
that the right channel sound can be output from the left and right speakers.
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