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JPH09271095

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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
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DESCRIPTION JPH09271095
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
acoustic device. Specifically, for example, left and right channel sound output signals and
surround sound output signals output from the sound signal reproduction means by the signal
supply means are supplied to a plurality of radially arranged speakers, and a predetermined
combination of the plurality of speakers is used. While correct sound image localization is
obtained, sound image localization is reversed in other combinations of the plurality of speakers.
Further, since the sound output signals supplied to the plurality of speakers can be switched by
operating the operation unit, correct sound image localization can be easily obtained in a desired
direction, and sound image localization is reversed in other directions. Can be obtained as if
listening from the back side of the sound source.
[0002]
2. Description of the Related Art Conventionally, audio signals of a plurality of channels, for
example, audio signals of left and right channels and audio signals of left and right channels for
surround are respectively supplied to predetermined speakers, and the three-dimensional sound
field effect is obtained Acoustic devices that can be obtained are known.
[0003]
By the way, in such an audio apparatus, since the audio signals of a plurality of channels are
respectively converted into the reproduced sound by the predetermined speaker and outputted,
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1
the listener can hear the reproduced sound outputted from the speaker If the listener is not at a
position where the left channel reproduction sound from the left direction and the right channel
reproduction sound from the right direction are output and the sound image localization can be
obtained correctly, the listener should obtain sufficient sound field effect I can not
Also, it is difficult to hear the playback sound on the back side of the sound device. For this
reason, in each case, for example, the direction of the CD radio cassette recorder (hereinafter
referred to as "CD radio cassette player") has to be aligned with the direction of the listener,
which is troublesome.
[0004]
Therefore, the present invention provides an acoustic device with improved operability.
[0005]
An audio apparatus according to the present invention comprises an audio signal reproducing
means for outputting audio signals of a plurality of channels, a plurality of speakers, and a
plurality of speakers for outputting audio signals output from the audio signal reproducing
means. , And correct sound image localization is obtained by a predetermined combination of a
plurality of speakers, and sound image localization is reversed by another combination of a
plurality of speakers.
[0006]
The plurality of speakers are arranged radially, and the audio signals of the plurality of channels
are an audio output signal of the left channel, an audio output signal of the right channel, and a
surround audio output signal.
[0007]
The control unit further includes an operation unit and a control unit that controls the signal
supply unit. The control unit controls the signal supply unit according to the operation of the
operation unit, and the signal supply unit switches audio signals supplied to the plurality of
speakers. It is a thing.
[0008]
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2
In the present invention, the audio output signal output from the audio signal reproducing means
is supplied by the signal supplying means to, for example, a plurality of radially arranged
speakers, and correct sound image localization can be obtained by a predetermined combination
of the plurality of speakers. In addition, sound image localization is reversed in other
combinations of the plurality of speakers.
Further, by operating the operation unit, the audio output signals supplied to the plurality of
speakers can be switched, and for example, a combination of speakers from which correct sound
image localization can be obtained can be changed.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an acoustic device according
to the present invention will be described below with reference to the drawings.
FIG. 1 is an external view of the case where the acoustic device is, for example, a CD radio
cassette player.
[0010]
In FIG. 1, a cross-sectional schematic view of the I-I ′ line of the CD radio cassette 1 is shown in
FIG. 2.
The speaker unit 10 of the CD radio cassette player 1 is disposed in the openings 11a and 11b of
the cabinet 11 so that, for example, the speakers 10a and 10b form an angle of 60 °, as shown
in FIG.
The speaker 10c is disposed at an angle of 60 ° with the speaker 10b, and the speakers 10c and
10d are disposed at the openings 12a and 12b of the cabinet 12 so as to form an angle of 60 °.
Further, the speaker 10e is disposed at an angle of 60 ° with the speaker 10d, and the speakers
10e and 10f are disposed at the openings 13a and 13b of the cabinet 13 so as to form an angle
of 60 °.
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[0011]
Audio signals are supplied to the speakers 10a to 10f from a signal supply unit described later. In
addition, on the outside of the openings 11a, 11b, 12a, 12b, 13a, 13b of the cabinets 11, 12, 13,
punching metals 14, 15, 16 for protecting the speakers are disposed. The operation state of the
CD radio cassette player 1 is displayed on the display unit 60.
[0012]
On the upper surface of the speaker unit 10, as shown in FIG. 1, a mounting unit 21 for
mounting a cassette tape and a compact disc, operating a cassette tape, compact disc, radio, etc.
An operation unit 22 for controlling voice and the like is provided.
[0013]
Next, the configuration of the CD radio cassette 1 will be described using FIG.
The radio receiver 31 receives a broadcast radio wave of a desired frequency. Audio signals SRAL
and SRAR obtained by receiving broadcast radio waves by the radio reception unit 31 are
supplied to a signal processing unit 35 described later, and an audio signal SCDL obtained by
reproducing a compact disc by the CD reproduction unit 32. And SCDR are also supplied to the
signal processing unit 35. Further, audio signals STPL and STPR obtained by reproducing the
cassette tape by the tape drive unit 33 are also supplied to the signal processing unit 35.
[0014]
The signal processing unit 35 selects one of the audio signals SRAL and SRAR, the audio signals
SCDL and SCDR, and the audio signals STPL and STPR according to the operation of the
operation unit 22 and adjusts the sound quality, etc. 40 supplied. In the amplifier unit 40, the
selected audio signal is amplified according to the operation of the operation unit 22 and
supplied to the signal supply unit 45 as audio output signals SOL and SOR. The signal supply unit
45 supplies the audio output signals SOL and SOR to the speakers 10a to 10f.
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[0015]
Next, the operation will be described. When the audio output signals SOL and SOR are supplied
to the signal supply unit 45 based on the control signal CS from the control unit 50 when the
operation unit 22 is operated, for example, as shown in mode 1 of FIG. An audio output signal
SOR of the right channel is supplied to 10e, and an audio output signal SOL of the left channel is
supplied to the speakers 10b and 10d. Further, to the speaker 10c, the sound output signal SOR
of the right channel is subtracted from the sound output signal SOL of the left channel and
supplied as a surround sound signal SRL, and to the speaker 10f, the sound output signal SOR of
the right channel to the left channel The audio output signal SOL is subtracted and supplied as a
surround audio signal SRR.
[0016]
For this reason, when the sound source position is the center of the CD radio cassette and the
front position of the sound source is the A direction shown in FIG. 2, the voices are output from
the speakers 10a to 10f. Normal sound image localization can be obtained, and a surround effect
can also be obtained. When sound is heard from the D direction side, the sound is reversely
localized, and it is possible to obtain an effect as if sound is being heard from the back side of the
sound source. It should be noted that the reproduction sound is heard as monaural sound even
on the sound output direction side of the speaker 10c which is the middle direction between the
B direction and the C direction and the sound output direction side of the speaker 10f which is
the middle direction be able to.
[0017]
Further, when it is possible to switch the signals supplied from the signal supply unit 45 to the
speakers 10a to 10f based on the control signal CS from the control unit 50 by operating the
operation unit 22, as shown in mode 2 of FIG. The sound output signal SOR of the right channel
is supplied to the speakers 10b and 10f, and the sound output signal SOL of the left channel is
supplied to the speakers 10c and 10e. The surround sound signal SRL is supplied to the speaker
10d, and the surround sound signal SRR is supplied to the speaker 10a. For this reason, sound is
output from the speakers 10a to 10f such that the sound source position is at the center of the
CD radio cassette and the front position of the sound source is at the B direction.
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[0018]
In addition, since the signals supplied to the speakers 10a to 10f can be switched as shown in
modes 3 to 6 in FIG. 4 by operating the operation unit 22, the sound source position is the center
of the CD radio cassette and the front position of the sound source is the C direction. It can be
switched in the ~ F direction.
[0019]
Thus, according to the above-mentioned embodiment, correct sound image localization can be
obtained in a predetermined direction.
Further, it is possible to hear the reproduced sound from the direction opposite to the
predetermined direction as well as to obtain an effect as heard from the back side of the sound
source. Furthermore, by operating the operation unit 22, the direction of the sound source can be
switched to a desired direction without changing the direction of the CD cassette. Therefore, the
operability of the CD radio cassette can be improved.
[0020]
Although the above embodiment has been described using a CD radio cassette as an audio device,
it goes without saying that the audio device is not limited to a CD radio cassette.
[0021]
According to the present invention, the audio output signal output from the audio signal
reproduction means by the signal supply means is supplied to, for example, a plurality of radially
arranged speakers, and a predetermined combination of the plurality of speakers is provided.
While correct sound image localization is obtained, sound image localization is reversed in other
combinations of the plurality of speakers.
In addition, by operating the operation unit, audio output signals supplied to a plurality of
speakers can be switched, and for example, a combination of speakers from which correct sound
image localization can be obtained can be changed.
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[0022]
For this reason, it is possible not only to obtain correct sound image localization in a
predetermined direction, but also to be able to hear reproduced sound from, for example, a
direction opposite to the predetermined direction and to obtain an effect like listening from the
back side of a sound source. Can. Furthermore, since the front position of the sound source is
switched without changing the direction of the sound device and correct sound image
localization can be obtained in a desired direction, the operability of the sound device can be
improved.
[0023]
Brief description of the drawings
[0024]
1 is a diagram showing the appearance of an embodiment of the acoustic device according to the
present invention.
[0025]
FIG. 2I is a schematic cross-sectional view taken along the line I-I '.
[0026]
3 is a diagram showing the configuration of the CD radio cassette player.
[0027]
4 is a diagram showing the relationship between the operation of the operation unit and the
signal supplied to the speaker.
[0028]
Explanation of sign
[0029]
DESCRIPTION OF SYMBOLS 10 Speaker parts 10a-10f Speakers 11, 12, 13 Cabinets 11a, 11b,
12a, 12b, 13a, 13b Openings 14, 15, 16 Punching metal 21 Mounting part 22 Operation part 45
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Signal supply part 50 Control part
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