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JPH0486198

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DESCRIPTION JPH0486198
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
effect device suitable for, for example, a multi-sound source reproduction system, and a
recording method suitable for, for example, binaural recording. SUMMARY OF THE INVENTION
The present invention relates to an effect device suitable for, eg, a multi-sound source
reproduction system, comprising: a microphone for converting sound from a sound source into
an audio signal; signal processing means for processing the audio signal from the microphone; A
speaker for amplifying the audio signal from the signal processing means, the microphone and
the speaker are attached to the wall and the ceiling respectively, and the audio signal supplied
from the sound source through the microphone is processed by the signal processing means; By
further expanding the voice, it is possible to favorably give the listener a sense of feeling and
presence like listening to a sound in a space different from the actual space in terms of hearing.
Further, the present invention relates to a recording method suitable for binaural recording, for
example, a microphone for converting a sound from a sound source to an audio signal, a signal
processing means for processing an audio signal from the microphone, and the signal processing
means The speaker and the binaural microphone are provided, and the microphone and the
speaker are attached to the wall and the ceiling respectively, and the audio signal supplied from
the sound source through the microphone is processed by the signal processing means, and then
the speaker In addition, by recording the sound from the sound source and the sound from the
speaker with the binaural microphone, when the recording medium obtained by this recording is
reproduced and the reproduced sound is listened with the headphones, Good feeling and
presence like listening to the sound in the listening space at the time of recording It can be
obtained. PRIOR ART Conventionally, an effect device called a surround processor or the like has
been proposed. This effect device supplies the playback audio signal from a compact disk player
etc. to the front speaker among the two sets of speakers connected to this effect device, that is,
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the front speaker and the rear speaker, and plays back the playback audio signal. Is supplied to
the rear speaker. Then, the listener listens to the reproduced sound from the front speaker
located in front of the listener, and listens to the reproduced sound temporally shifted from the
reproduced sound from the rear speaker located behind the listener. So that the so-called
surround effect can be obtained. Also, in the reproduction performed by a so-called multi-sound
source reproduction system, which is performed in recent years, a recording medium on which
audio signals of different sound sources (for example, piano, guitar, human voice, etc.) are
recorded in advance is reproduced and reproduced. The audio signals of different sound sources
are supplied to separate speakers located in front of the listener, respectively, and are separately
amplified by these speakers, and the audio signal is also supplied to the effect device described
above, and delay processing etc. are performed. After that, they were supplied to speakers
located behind the listener, and these speakers were used to make them loud.
This makes it possible to give the listener the feeling and presence as if listening to the actual
performance in a space with a sense of hearing and depth. Furthermore, in a configuration
similar to that described above, there has been proposed a method of recording with a binaural
microphone in which microphones are respectively installed in both ears of a human head model.
By the way, in the above-mentioned effect device, the reproduced audio signal is transmitted to
the effect device by a cable or the like, the audio signal is delayed by the effect device, and the
delayed audio signal is cabled. , Etc., and the audio signal is expanded by this speaker. Therefore,
the reproduced audio signal is only processed electrically until it is loudened by the speaker. For
this reason, reproduction by the above-described multi-sound source reproduction system has a
disadvantage that the listener feels that the space and sense of realism are insufficient. In
addition, when the recording medium obtained by binaural recording the reproduction sound by
the above-described multi-source reproduction system is reproduced and the reproduction sound
is to be listened with the headphones, the space above the listener can be In view of such a point
of view, the present invention provides the listener with a sense and sense of realism that the
user is listening to the sound in a space different from the actual space. The effect device that can
give a good effect, and the recording medium obtained by recording, and when listening to the
reproduction sound with headphones, the sense that listening to the sound in the space on the
hearing sense and in the hearing sense at the time of recording And, it is intended to propose a
recording method that can give a sense of reality well. [Means for Solving the Problems] The
effect device of the present invention is, for example, as shown in FIG. 1, a microphone (3a) for
converting the sound from the sound sources (2a), (2b),. (3b) and signal processing means (4a)
for processing the audio signal from the microphone (3a); (3b); (4b); and audio from the signal
processing means (4a); (4b) A microphone (3a); (3b) and a speaker (5a), (6a); (5b), (6b) having
speakers (5a), (6a); (5b), (6b) for amplifying a signal. Are attached to the wall and ceiling
respectively, and sound sources (2a), (2b),... (2?) from which microphones (3a): (3b) are supplied
as audio signals Management means (4a); it was treated with (4b), a speaker (5a), (6a): (5b), is
obtained so as to loudspeaker from (6b).
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Further, according to the recording method of the present invention, for example, as shown in
FIG. 2, microphones (3a), (3b) making sound from sound sources (2a), (2b),. Signal processing
means (4a) for processing the audio signal from the microphone (3a); (3b); (4b) and a speaker
(5a) for expanding the audio signal from the signal processing means (4a); (4b) (6a); (5b), (6b)
and a binaural microphone (8), the microphone (3a); (3b) and the speaker (5a), (6a); (5b), (6b) To
the wall and ceiling respectively, and the sound source (2a), (2b), ... (21) from the microphone
(3a): the sound supplied via (3b) After the signal is processed by the signal processing means
(4a); (4b), the sound is amplified by the speakers (5a), (6a); (5b), (6b) and the sound sources (2a),
(2b), ... The sound from (21) and the speakers (5a), (6a); (5b), and (6b) are binaurally recorded
with a binaural microphone (8). According to the effect apparatus of the present invention to be
described above, the microphones (3a), (3b) and the speakers (5a), (6a); (5b) and (6b) are
attached to the wall and ceiling respectively, and the sound sources (2a), (6) 2b) ... (21) After
processing an audio signal supplied via the microphone (3a): (3b) by the signal processing means
(4a); (4b), the speakers (5a), (6a) (5b) and (6b) are louder, so that the listener (7) feels good and
feels like being listening to a sound in a space different from the actual space in terms of hearing.
Can be given. Further, according to the recording method of the present invention described
above, the microphone (3a), (3b) and the speaker (5a), (6a); (5b), (6b) are attached to the wall
and ceiling respectively, and the sound source (2a), (2b), =-<21 ") After processing the audio
signal supplied through the microphone (3a); (3b) by the signal processing means (4a); (4b), the
speakers (2a), (2b) ) = и и и (2n) and sound from the sound sources (2a), (2b), ... (2?) and speakers
(5a), (6a); (5b), (6b) Sound is recorded with a binaural microphone (8), so that the recording
medium obtained by this recording is reproduced, and when the reproduced sound is listened
with headphones, the auditory feeling , It is possible to give to good sense and realism, such as
listening to the sound in the space of audibility at the time of recording.
[Embodiment] An example of the effect apparatus of the present invention will be described in
detail below with reference to FIG. In FIG. 1, (1) is a playback device for playing back a recording
medium (such as 8 mm video tape etc.) in which sound signals of sound sources such as musical
instruments are multi-recorded by 12 channels, for example. Thus, a plurality of audio signals
reproduced from the recording medium described above are respectively supplied to the
speakers (2a), (2b),... (21). Incidentally, these speakers (2a), (2b),... (2?) are adapted to the
position of the musical instrument or the like when the unsample performance is actually
performed. Thus, from each of the speakers (2a), (2b),... (2f), the sound of a pre-assigned musical
instrument or the like is expanded, so that the listener (7) hears so-called in front of his eyes. It
can give a sense of reality as if a live performance is being performed. (3a) is a microphone, and
this microphone (3a) is attached to the right wall of the listener (7) as shown in the figure. This
microphone (3a) converts the sound from each of the above-mentioned speakers (2a), (2b),... (21)
into an audio signal, and for example to a signal processor (4a) which delays this audio signal for
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a predetermined time Supply. This signal processor (for example, delay device etc.) (4a) delays
the audio signal from the microphone (3a) for a predetermined time, and the delayed audio
signal is, as shown in FIG. The audio signal is supplied to speakers (5a) and (6a) attached to the
wall, respectively, and these audio signals are respectively amplified by the speakers (5a) and
(6a). (3b) is a microphone, which is attached to the rear wall of the listener (7) as shown in the
figure. This microphone (3b) converts the sound from each of the above-mentioned speakers
(2a), (2b),... (21) into an audio signal, and delays this audio signal for a predetermined time, for
example, in signal processing 1 (4b) Supply. This signal processor (for example, delay device)
(4b) delays the audio signal from the microphone (3b) for a predetermined time, and this delayed
audio signal is shown in the figure (each on the back wall of the listener (7) The audio signal is
supplied to speakers (5b) and (6b) attached respectively, and these audio signals are respectively
amplified by the speakers (5b) and (6b). Thus, the sound from each of the speakers (2a), (2b),...
(2?) arranged in front of the listener (7) is heard by the listener (7).
At the same time, the sound from each of the speakers (2a), (2b),... (21) is supplied to the signal
processor (4a) through the microphone (3a) attached to the wall on the right side, After being
subjected to the delay processing, the sound is amplified by the speakers (5a) and (6a), and the
amplified sound is heard by the listener (7). Further, each speaker (2a), (2b), == (24 sound is
supplied to the signal processor (4b) via the microphone (3b) attached to the rear wall and
subjected to delay processing Later, the sound is amplified by the speakers (5b) and (6b), and the
amplified sound is heard by the listener (7). Therefore, in this case, the listener (7) can feel that
the space on the right and the space behind the listener (7) are larger than the actual space in
terms of hearing. Also, after being loudened by the speakers (5a) and (6a) and the speakers (5b)
and (6b), the sound reflected by the ceiling or wall is again transmitted through the microphones
(3a) and (3b). After being supplied to the signal processors (4a) and (4b) again and delayed, they
are amplified by the speakers (5a) and (6a) and the speakers (5b) and (6b). Because the listener
(7) listens to the sound of repeated repetition of such a thing at any time, the listener feels more
deeply, for example, feels like listening to live music in a concert hall, in terms of hearing this
listener (7) can be given. FIG. 2 is a block diagram showing an example of the recording method
of the present invention. In FIG. 2, the parts corresponding to those in FIG. 1 are given the same
reference numerals, and the explanation thereof is omitted. In FIG. 2, the speakers (2a), (2b), ==
(24!) As in FIG. , And the plurality of audio signals reproduced by the player (1) are respectively
loudened by the speakers (2a), (2b),... (21). Also, as in FIG. 1, the microphone (3a) and the
speakers (5a) and (6a) are attached to the wall on the right side of the speakers (2a), (2b),. The
sound is collected by the microphone (3a), the audio signal from the microphone (3a) is delayed
by the signal processor (4a), and the delayed audio signal is amplified by the speakers (5a) and
(6a). Do. Furthermore, as in FIG. 1, these speakers (2a). (2b) ииииииииииииии Attach a microphone (3b) and
speakers (5b) and (6b) on the rear wall with respect to (21), collect sound by this microphone
(3b), and this microphone (3b) A signal processor (4b) delays the higher audio signal, and the
delayed audio signal is amplified by speakers (5b) and (6b).
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(8) is a binaural microphone in which microphones are attached to both ears of a human head
model, and this binaural microphone (8) is positioned as shown in the figure, that is, speakers
(2a), (2b),. ииии Set up toward (21). (9) is a recorder, which records the audio signal from the z)
inital microphone (8) on a recording medium. Now, when the sound is amplified by the abovementioned speakers (2a), (2b),... (21) and this recorder (9) is in the recording state, in front of
this binaural microphone (8) The sound from each of the positioned speakers (2a), (2b),... (21) is
collected by this binaural microphone (8). Along with this, these speakers (2a), (2b). ...
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии и и и и и и и и и и и и и и и и и и и и и и и и и и и и (2 ?) sound from the
microphone attached to the right wall (3a) is supplied to the signal processor (4a) through delay
processing after the speaker (5a) and (6a) And the loud sound is collected by the binaural
microphone (8). And furthermore, the sound from each speaker (2a), (2b), == (21>) is supplied to
the signal processor (4b) via the microphone (3b) attached to the rear wall and subjected to delay
processing The louder sound that is later amplified by the speakers (5b) and (6b) is collected by
the binaural microphone (8). Then, after being loudened by the speakers (5a) and (6a) and the
speakers (5b) and (6b), the sound reflected by the ceiling or wall is again transmitted through the
microphones (3a) and (3b). The signals are again supplied to the signal processors (4a) and (4b),
delayed and then amplified by the speakers (5a) and (6a) and the speakers (5b) and (6b),
respectively. A sound in which such a thing is repeated is collected by this binaural microphone
(8) as needed. In such a situation, the sound collected by the binaural microphone (8) is recorded
on the recording medium by the recorder (9). Then, when the recording medium is reproduced
and the reproduced sound is listened to in a sense, the sense and presence of listening to the
sound in a space wider than the space at the time of recording can be obtained. That is, although
listening to the sound at Hessodofon, it can be felt as if listening to live music at, for example, a
concert hall, in terms of hearing.
In addition, for example, even if the full-use and Furukawa speakers are arranged toward the left
and right ears of the listener and the reproduced sound from the above-mentioned recording
medium is amplified to the husband by these two speakers, the same effect as the road can get.
In all of the above examples, the sound source is a speaker, but an actual musical instrument may
be used as a sound source. Also, the microphone (3a), the speakers (5a) and (6a), and the
microphone (3b) and the speakers (5b) and (6b) may not be attached to the same surface. Also,
the mounting may be at any position, and the number of microphones and speakers may be any.
Furthermore, the signal processors (4a) and (4b) are not limited to delay devices, but may be socalled digital reverbs, multi-effectors, etc., which are generally known, and when these are used, a
deeper sense of reality is provided to listeners. Can be given. Further, the present invention is not
limited to the above-described embodiment, and it goes without saying that various other
configurations can be taken without departing from the scope of the present invention.
According to the effect apparatus of the present invention described above, the microphone and
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the speaker are attached to the wall and the ceiling respectively, and an audio signal supplied
from the sound source through the microphone is processed by the signal processing means and
then amplified from the speaker As a result, there is an advantage that the listener can be
favorably given the sense and sense of presence as if listening to a sound in a space different
from the actual space in terms of hearing. Further, according to the recording apparatus of the
present invention to be described above, the microphone and the speaker are attached to the wall
and the ceiling respectively, and the audio signal supplied from the sound source through the
microphone is processed by the signal processing means and then amplified from the speaker
Since it was made to record the sound of the sound and the sound from the Svica with the
binaural microphone, when the recording medium obtained by this recording is reproduced and
the reproduced sound is heard with the Hen F phone, it is audibly felt when recording There is an
advantage that the sense and presence like listening to the sound in the auditory space can be
well given.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a block diagram showing an example of use of the effect device of the present invention,
and FIG. 2 is a block diagram showing an example of the recording method of the present
invention.
(2a), (2b),-= (21 ') are speakers, (3a) and (3b) are microphones, (4a) and (4b) are signal
processors, (5a) and (6a) are speakers, 5b) and (6b) are speakers and (8) are binaural
microphones.
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