close

Вход

Забыли?

вход по аккаунту

?

JP2005045533

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP2005045533
An audio reproducing apparatus having a plurality of speakers, which is used in combination
with a flat display panel, eliminates the incompatibility when the sense of wideness or surround
feeling is unnecessary. An audio reproduction apparatus which is used in combination with a
display panel 16 for reproducing an image and which uses a plurality of speakers 11 to 14
including surround speakers 13 and 14, particularly news of television at midnight When you
look at the sound source, cut off the supply of audio signals to the front speakers 11 and 12 and
supply the audio signals to be reproduced by the front speakers 11 and 12 to the rear speakers
13 and 14 to make sound from a position close to the listener 20 Generate [Selected figure]
Figure 2
Voice playback device
[0001]
The present invention relates to an audio reproduction apparatus, and more particularly to an
audio reproduction apparatus having at least a pair of left and right front speakers and a pair of
left and right rear speakers or surround speakers.
[0002]
In order to reproduce music and the like by beautiful voice of high-quality sound having a sense
of spread, a multi-channel type audio reproduction device is provided.
09-05-2019
1
For example, there has been proposed an audio reproduction apparatus including a pair of front
left and right front speakers and a pair of rear right and left rear speakers or surround speakers.
Furthermore, there has been proposed a 5.1-channel audio reproduction device configured by a
pair of left and right front speakers, a pair of left and right rear speakers, a center speaker on the
front side, and a woofer for bass.
[0003]
Such multi-channel audio reproduction devices are often used in combination with a flat display
panel. In particular, when used in combination with a large display panel, the listener enjoys the
sound while watching the image of the display panel at a relatively distant position from the
display panel. This means that the distance between the front speaker and the listener increases.
Therefore, unless the volume of the front speaker is increased, the sound from the front speaker
can not be heard sufficiently. For this reason, in the 4- or 5.1-channel audio reproduction
apparatus, the audio output of the left and right front speakers becomes relatively large.
[0004]
Since the sound output of the front speaker is large as described above, the sound of the front
speaker may be noisy particularly when the surroundings are quiet as in the nighttime. In
addition, when watching television broadcast news and the like by the display panel, there is no
particular need to have a sense of expansion in audio output. Therefore, the above-described
multi-channel type audio reproduction apparatus does not necessarily constitute an optimal
audio environment at night, when reproducing the sound of a television, and particularly when
watching news or the like.
[0005]
As a prior art similar to the present invention, there is JP-A-2-299395. In this publication, a
plurality of source signals are simultaneously switched to the front side and the rear side by
controlling the source channel switching circuit by controlling the source channel switching
circuit by the operation of the switch. A control circuit for controlling output to each speaker is
provided, and the control circuit turns on power to a source other than the currently output
source by the operation of the switch and controls switching of the source channel switching
circuit Discloses an on-vehicle audio apparatus that outputs audio signals of a plurality of sources
09-05-2019
2
to the front and rear speakers simultaneously by dividing the two types of source signals into the
front side and the rear side. There is.
[0006]
Although such an audio device makes it possible to simultaneously divide and reproduce two
types of audio sources into the front and rear speakers, in the case of listening to the 4- or 5.1channel audio device described above at night. It is not possible to solve the problem of the
loudness of the front speakers and the incompatibility of the audio reproduction device when
listening to television news.
[0007]
JP-A-2-299395 JP-A-2002-191100 JP-A-H11-4500 JP-A-62-283799
[0008]
It is an object of the present invention to provide an audio reproducing apparatus which makes it
possible to avoid particularly loud sound output of a front speaker when enjoying a nighttime
television by a reproducing apparatus having at least a pair of left and right front speakers and a
pair of left and right rear speakers or surround speakers. To provide.
[0009]
Still another problem of the present application is to eliminate the incompatibility of the multichannel type audio reproduction apparatus when reproducing sound such as television broadcast
news and the like that does not require a sense of sound image expansion.
[0010]
A main invention of the present application relates to an audio reproduction apparatus having a
pair of left and right front speakers and a pair of left and right rear speakers or surround
speakers, wherein an audio signal to be supplied to the pair of left and right front speakers is the
pair of left and right rear speakers or surround The present invention relates to an audio
reproduction apparatus characterized in that switching means for supplying to a speaker is
provided.
[0011]
09-05-2019
3
Here, when the switching means supplies the audio signal to be supplied to the pair of left and
right front speakers to the pair of left and right rear speakers or the surround speaker, the pair
of left and right front speakers do not reproduce the sound. preferable.
Preferably, the switching means is a switching switch connected to a signal line for supplying an
audio signal to the pair of left and right rear speakers or surround speakers.
[0012]
Another main invention of the present application is an audio reproduction device having a pair
of left and right front speakers and a pair of left and right rear speakers or surround speakers,
wherein the left and right pair of rear speakers are supplied with audio signals to be supplied to
the pair of left and right front speakers. The present invention relates to an audio reproducing
apparatus characterized by further comprising switching means for supplying to a surround
speaker and switching to supply an audio signal to be supplied to the pair of left and right rear
speakers or the surround speaker to the pair of left and right front speakers. It is a thing.
[0013]
Here, it is preferable that the switching means is a switch connected to a signal line for supplying
an audio signal to the pair of left and right front speakers and the pair of left and right rear
speakers or surround speakers.
Preferably, a variable resistor is connected in series with the switching switch, and the magnitude
of the audio signal is adjusted by the variable resistor.
Furthermore, it is preferable that a speaker for bass is provided, and the size of the audio output
of the speaker for bass is adjusted in conjunction with switching by the switching means.
[0014]
Still another main invention of the present application is an audio reproduction apparatus having
a pair of left and right front speakers and a pair of left and right rear speakers or surround
speakers, provided with a pillow speaker and a switching means, and switching the switching
means Audio signal to be supplied to the front speaker of the speaker is supplied to the pillow
speaker, and an audio signal to the pair of left and right front speakers and the pair of left and
09-05-2019
4
right rear speakers or surround speaker is blocked It is about
[0015]
Here, it is preferable that the switching means be an open / close switch connected to a signal
line for supplying an audio signal to the pillow speaker.
Preferably, the pillow speaker is attached to the back of the sofa.
[0016]
According to the main invention of the present application, the switching means reproduces the
audio signal to be supplied to the pair of left and right front speakers by the pair of left and right
rear speakers or the surround speaker.
Therefore, the listener can listen to the sound by the rear speaker or the surround speaker
arranged at the near position without listening to the sound reproduced by the front speaker at
the far position, and the sound of the louder volume than necessary from the front speaker No
need to play.
[0017]
According to another main invention of the present application, it is possible to reverse the audio
signals supplied to the pair of front speakers and the pair of rear speakers or surround speakers
by the switching means.
Therefore, when the listener listens to the sound which does not need a sense of expansion at a
position close to the rear speaker or the surround speaker, the sound which is originally
reproduced by the front speaker can be heard by the rear speaker or the surround speaker and
Under normal circumstances, it becomes possible to reproduce and listen to the sound
reproduced by the rear speaker or the surround speaker.
09-05-2019
5
[0018]
According to still another main invention of the present application, by switching the switching
means, it becomes possible to listen to the sound originally reproduced from the pair of left and
right front speakers by the pillow speaker.
In addition, at this time, since the pair of left and right front speakers and the pair of left and
right rear speakers or surround speakers no longer reproduces the sound, the pillow speaker can
listen to the sound at the minimum volume.
[0019]
FIGS. 1 and 2 show the audio reproduction apparatus according to the first embodiment, and this
audio reproduction apparatus is, as shown in FIGS. 1 and 2, a left front speaker 11, a right front
speaker 12, and a left rear. It is comprised from four speakers of the speaker 13 and the rear
speaker 14 of the right side. The left and right rear speakers 13 and 14 double as surround
speakers. An audio source 15 for supplying audio signals to the speakers 11 to 14 is provided,
and a flat display panel 16 is provided upright between the left and right front speakers 11 and
12. The listener 20 sits on the sofa 21 disposed between the four speakers 11 to 14 so as to face
the display panel 16 and listens to the audio reproduced by the four speakers 11 to 14 while
looking at the display panel 16 become.
[0020]
FIG. 2 shows the configuration of a circuit block of such an audio reproduction apparatus, and a
radio tuner 25, a television tuner 26, a disc player 27, a tape player 28 and the like are prepared
as the audio source 15. Are connected to the A / D converter 30. The decoder / D / A converter
31 is connected to the next stage of the A / D converter 30.
[0021]
The FL terminal of the decoder / D / A converter 31 is connected to the left front speaker 11
09-05-2019
6
through a series circuit of a variable resistor 35 and an amplifier 36. The FR terminal of the
decoder / D / A converter 31 is connected to the right front speaker 12 via a series circuit of a
resistor 37 and an amplifier 38. The SL terminal of the decoder / D / A converter 31 is connected
to the left rear speaker 13 via a series circuit of a variable resistor 39 and an amplifier 40.
Further, the SR terminal of the decoder / D / A converter 31 is connected to the right rear
speaker 14 via a series circuit of a variable resistor 41 and an amplifier 42.
[0022]
A changeover switch 45 is provided between the SL terminal of the decoder / D / A converter 31
and the variable resistor 39, and the movable contact is made by the changeover switch 45 with
the SL terminal of the decoder / D / A converter 31 and FL It is made to switch to the terminal. A
changeover switch 46 is connected between the SR terminal of the decoder / D / A converter 31
and the variable resistor 41, and the movable contact of the changeover switch 46 is the SR
terminal and the FR terminal of the decoder / D / A converter 31. To switch to the
[0023]
Further, the system includes an operation input unit 47 for switching the speakers 11 to 14, and
the operation input unit 47 is connected to the control unit 48. The control unit 48 controls the
switching of the pair of changeover switches 45 and 46, and further performs volume
adjustment of the four variable resistors 35, 37, 39 and 41.
[0024]
Next, the operation of the apparatus configured as described above will be described. In the
normal use state, that is, in the case of reproducing the four speakers 11 to 14 respectively using
the original functions, the control unit 48 switches as shown in FIG. 2 in accordance with the
selection operation of the operation input unit 47 by the listener 20. The switches 45 and 46 are
respectively switched to the SL terminal and SR terminal of the decoder / D / A converter 31 as
shown by dotted lines. Also, the levels of the four variable resistors 35, 37, 39, 41 are set to
normal proper levels.
[0025]
09-05-2019
7
In such a state, either the video signal from the television tuner, the video signal reproduced by
the disc player 27 or the video signal reproduced by the tape player 28 is reproduced by the
display panel 16. At this time, it is possible to simultaneously reproduce the sound by the left and
right front speakers 11 and 12 and the rear speakers 13 and 14, and to enjoy the sound while
reproducing the image by the display panel 16 in the normal use state.
[0026]
On the other hand, when watching television broadcast news etc. on the display panel 16 at
midnight, for example, the listener 20 switches the operation input unit 47 and the control unit
48 switches the switches 45 and 46 to the decoder / D / A converter, respectively. Switch to 31
FL terminal and FR terminal respectively. At this time, the variable resistors 35 and 37 are
greatly narrowed, thereby substantially interrupting the supply of the audio signal to the front
speakers 11 and 12.
[0027]
Therefore, in this case, after the audio signal obtained by the television tuner 26 is converted to
digital form by the A / D converter 30 and signal processing is performed by the decoder / D / A
converter 31, a pair of left and right rear speakers 13, 14 will play. In particular, the front side
audio signals to be reproduced by the front speakers 11 and 12 are reproduced by the pair of
left and right rear speakers 13 and 14, and the front speakers 11 and 12 do not reproduce
sound.
[0028]
Therefore, when watching television news at midnight, listen to the audio signal that the front
speakers 11 and 12 would normally reproduce from the pair of left and right rear speakers 13
and 14 behind and near the listener 20 Becomes possible. Therefore, while being able to listen to
television news quietly at night, it is not necessary to play the sound which has the power of
unnecessary surround and a feeling of expansion. That is, when watching TV news late at night, it
becomes possible to eliminate the incompatibility of the sound reproduction.
09-05-2019
8
[0029]
Next, a second embodiment will be described with reference to FIG. 3 and FIG. In this
embodiment, in addition to a pair of left and right front speakers 11 and 12 and a pair of left and
right rear speakers 13 and 14, a woofer 51 which is a bass speaker is added, and an audio
reproduction apparatus is configured of five speakers. The woofer 51 is connected to the W
terminal of the decoder / D / A converter 31 via a series circuit of the variable resistor 52 and
the amplifier 53.
[0030]
Further, in this embodiment, in addition to the changeover switches 45 and 46 connected to the
signal lines for supplying the audio signals to the rear speakers 13 and 14, the switches also to
the signal lines for supplying the audio signals to the front speakers 11 and 12 55, 56 are
connected. The changeover switch 55 switches between the FL terminal and the SL terminal of
the decoder / D / A converter 31. On the other hand, the changeover switch 56 switches between
the FR terminal and the SR terminal of the decoder / D / A converter 31.
[0031]
In the above configuration, when using this system to listen to audio in a normal use state, the
listener 20 operates the operation input unit 47 and the control unit 48 controls the four
changeover switches 55, 56, 45, 46. Are respectively switched to the dotted line positions shown
in FIG. That is, the movable contact of the changeover switch 55 is switched to the FL terminal
side of the decoder / D / A converter 31. Further, the movable contact of the changeover switch
56 is switched to the FR contact of the decoder / D / A converter 31. Further, the movable
contact of the changeover switch 45 is switched to the SL terminal of the decoder / D / A
converter 31. Further, the movable contact of the changeover switch 46 is switched to the SR
contact of the decoder / D / A converter 31.
[0032]
Further, at this time, the control unit 48 sets the levels of the five variable resistors 35, 37, 39,
09-05-2019
9
41, 52 at an approximately appropriate intermediate position according to the instruction of the
operation input unit 47. As a result, the audio signal on the front side is reproduced by the left
and right front speakers 11 and 12 and the surround sound is reproduced by the left and right
rear speakers 13 and 14. Further, the woofer 51 reproduces the sound in the low frequency
range. For this reason, for example, when the video signal reproduced by the disc player 27 is
reproduced by the display panel 16 and the video is enjoyed, it becomes possible to reproduce
powerful sound of surround sound with a sense of expansion.
[0033]
On the other hand, when listening to music quietly at night, the listener 20 operates the
operation input unit 47 to switch the changeover switches 55, 56, 45, 46 to the solid line
positions shown in FIG. . That is, the movable contact of the changeover switch 55 is switched to
the SL terminal of the decoder / D / A converter 31. Further, the movable contact of the
changeover switch 56 is switched to the SR terminal of the decoder / D / A converter 31. Further,
the movable contact of the changeover switch 45 is switched to the FL contact of the decoder / D
/ A converter 31. Further, the movable contact of the changeover switch 46 is switched to the FR
terminal of the decoder / D / A converter 31. At this time, the levels of the variable resistors 35,
37, 39, 41, 52 are also adjusted via the control unit 48. That is, the resistance values of these
variable resistors 35, 37, 39, 41, 52 are adjusted so as to obtain an appropriate volume level
according to the environment to be used and the preference of the listener 20.
[0034]
Therefore, in this case, the pair of left and right front speakers 11 and 12 and the pair of left and
right rear speakers 13 and 14 reproduce mutually opposite sound signals. That is, while the rear
speakers 13 and 14 reproduce the audio signal to be reproduced by the front speakers 11 and
12 originally, the surround sound to be reproduced by the rear speakers 13 and 14 by the front
speakers 11 and 12 Do. By reversing the sound output of the front speakers 11 and 12 and the
rear speakers 13 and 14 as described above, it is possible to give the listener 20 a sense of
comfort while giving the surround effect. Therefore, suitable sound reproduction is performed
when listening to music quietly before going to bed. Since the woofer 51 sounds, the output is
preferably suppressed.
[0035]
09-05-2019
10
Next, a third embodiment will be described with reference to FIG. 5 and FIG. In this embodiment,
an audio reproduction apparatus is configured by a pair of left and right front speakers 11 and
12, a pair of left and right rear speakers 13 and 14, and a pillow speaker 58. The pillow speaker
58 is attached to the backrest portion of the sofa 21 as shown in FIG.
[0036]
The P terminal of the decoder / D / A converter 31 shown in FIG. 6 is connected to a pillow
speaker 58 via a series circuit of a variable resistor 59 and an amplifier 60. An open / close
switch 61 is connected between the variable resistor 59 and the P terminal of the decoder / D / A
converter 31.
[0037]
Here also, a control unit 48 that performs control operation according to an instruction from the
operation input unit 47 is provided. Furthermore, of the variable resistors 35 and 37 connected
to the audio signal supply circuit of the left and right front speakers 11 and 12 and the variable
resistors 39 and 41 connected to the audio supply circuit of the left and right rear speakers 13
and 14, respectively. It is designed to make level adjustments.
[0038]
In the configuration as described above, in the normal use state, the control unit 48 opens the
open / close switch 61 according to the instruction of the operation input unit 47. Therefore,
normally, in a state where the audio signal is not supplied to the pillow switch 58, audio
reproduction is performed by the left and right front speakers 11, 12 and the left and right rear
speakers 13, 14. In particular, the rear speakers 13 and 14 generate a surround effect, and
reproduce the sound that is full of surround sound and has a sense of expansion as a whole.
[0039]
On the other hand, when quietly enjoying a television at midnight, the listener 20 operates the
09-05-2019
11
operation input unit 47 and the control unit 48 narrows down the audio signals for the front
speakers 11 and 12 by the variable resistors 35 and 37. Substantially shut off. Further, by
narrowing down the variable resistors 39 and 41 by the control unit 48, the sound of the rear
speakers 13 and 14 is narrowed. Therefore, the supply of the audio signal is substantially cut off
to the pair of left and right front speakers 11 and 12 and the pair of left and right rear speakers
13 and 14.
[0040]
Then, the control unit 48 closes the open / close switch 61 and sets the variable resistor 59 to an
intermediate proper level. Therefore, the audio signal is reproduced only from the pillow speaker
58. For example, an audio signal on which audio signals to be supplied to the left and right front
speakers 11 and 12 are superimposed is supplied to the pillow speaker 58. It is also possible to
provide a pair of left and right pillow speakers 58 and arrange these pillow speakers so as to be
positioned on the left and right of the listener 20.
[0041]
Although the invention included in the present application has been described by the illustrated
embodiments, the invention included in the present application is not limited to the above
embodiments, and various modifications can be made within the scope of the technical idea of
the invention included in the present application. Is possible. For example, various changes can
be made to the number, arrangement, and the like of the speakers in the above embodiment.
Further, the functions of the operation input unit 47 and the control unit 48 may be incorporated
into a remote commander of a television receiver comprising a display panel, and a speaker to be
selected may be displayed on the display panel 16.
[0042]
The present invention is widely applicable to multi-channel audio devices having at least a pair of
left and right front speakers and a pair of left and right rear speakers or surround speakers.
[0043]
It is a top view which shows the audio | voice reproduction apparatus of 1st Embodiment.
09-05-2019
12
[0044]
It is a block diagram which shows the system configuration | structure of the audio | voice
reproduction | regeneration apparatus.
[0045]
It is a top view of the audio reproduction device of a 2nd embodiment.
[0046]
It is a block diagram which shows the system configuration | structure of the audio | voice
reproduction | regeneration apparatus.
[0047]
It is a top view of the audio reproduction device of a 3rd embodiment.
[0048]
It is a block diagram which shows the system configuration | structure of the audio | voice
reproduction | regeneration apparatus.
Explanation of sign
[0049]
11. Front Speaker (L), 12. Front Speaker (R), 13. Rear Speaker (L), 14. Rear Speaker (R), 15.
Audio Source, 16. Display Panel, 20. ... Listeners 21 21. Sofas 25. Radio tuners 26. Television
tuners 27. Disc players 28. Tape players 29. Select switches 30. A / D converters 31. Decoder, D
/ A converter, 35 .. variable resistance, 36 .. amplifier, 37 .. variable resistance, 38 .. amplifier, 39
.. variable resistance, 40 .. amplifier, 41 .. variable resistance, 42 .. Amplifier, 45, 46... Switching
switch, 47 .. Operation input unit, 48 .. Control unit, 51 .. Woofer (speaker for bass), 52 .. Variable
resistance, 53 .. Amplifier, 55 , 56 .. changeover switch, 58 ..... pillow speaker, 59 ..... variable
resistance, 60 .. amplifier, 61 .. open / close switch
09-05-2019
13
Документ
Категория
Без категории
Просмотров
0
Размер файла
23 Кб
Теги
jp2005045533
1/--страниц
Пожаловаться на содержимое документа