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JPS526601

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Notice
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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS526601
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a first embodiment of a
pseudo head used in a four-channel sound field recording apparatus of the present invention, and
FIG. 2 is a plan view showing the second embodiment. is there. DESCRIPTION OF SYMBOLS 1 ...
Pseudo-head, 2 ... Sound insulation member, 3 ... Front pseudo-head, 4 ... Rear pseudo-head, 5 ...
Pseudo-auricle, 6 ... Microphone, 7 ... Zhang Sheeting member. Figure 1 Figure 2-1-
[Detailed Description of the Invention] This invention relates to a 4-channel sound field recording
apparatus using a pseudo-head that performs recording similar to what a listener listens to in the
sound field when recording a sound field [7. In other words, the sound of all directions of
recording & playing place is recorded with 4 channels in front, back, left and right, and when
playing back, it is possible to play back with 4 speakers arranged in front, back, left, right or 4
channels. It is an object of the present invention to provide a 4-channel sound field recording
apparatus for performing recording. (11: The present invention will be described with reference
to the drawings. FIG. 1 shows a first embodiment of the present invention, and ▪ indicates a
simulated head used in the 4-channel sound field recording apparatus of the invention, and 2
indicates this simulated head. Is an eer one member provided in the pseudo head so as to divide
the back and forth almost vertically into two, thereby being divided into the front pseudo class 3
and the rear pseudo class 4 in two. Such division may be performed by bonding the front pseudo
3 and the rear pseudo 4 to both surfaces of the sound insulation member 20, or the sound
insulation 2 may be provided in the form of a hook around the outer periphery of the pseudo
head l. Reference numeral 5 is a simulated pinnacle provided on the left and right of the front
model 3 and the rear model 4, respectively, and 6 is a microphone provided in these model
auricle. The size of the sound insulation member 2 is made large enough to obtain sound
insulation between the front pseudo-class and the rear pseudo IU head according to the
recording sound field, and the surface of the sound insulation member 2 relative to the
microphone 6 It is made of sound absorbing material so that the influence of reflection etc. does
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not reach. In this way, the pseudo head 1 used in the 4 channel sound field recording apparatus
is configured. (2) FIG. 2 shows another embodiment of the pseudo end 1, which differs from the
previous embodiment in that the projecting member 7 is disposed between the sound insulation
member 2 and the front pseudo end 3 and the rear pseudo 4 It is a point provided. The reason
for providing this is to prevent the deterioration of the sound quality that occurs when the
distance between the sound insulation member 2 and the microphone 6 is too short. And if the
size of the tension part 7 is too large compared to the ratio of the size of the sound insulation
member 2, the sound insulation effect is small even if the surface of the noise reduction member
20 is made of a sound absorbing material The separation of the front and back of the sound
insulation member 20 is degraded, and conversely, if the ratio of the size of the sound insulation
member 2 is too small, the influence of the sound insulation member 2 becomes large, so the size
is limited. , It is necessary to make it the optimal size for recording of 4 channel sound field. As
described above, this invention is provided with a sound insulation member at the pseudo end,
which divides the sound into two substantially vertically in the front and rear direction, and the
artificial ears at the left and right of the front pseudo end and rear pseudo kind divided in two.
Since a 4-channel sound recording system (3) using a pseudo end provided with a microphone
and a microphone is provided, it is almost the same as a listener listening to the sound from the
front, rear, left and right in the sound field. It is possible to record in the same state, so if you
play the recording with four speakers arranged in front, back, left and right, or with 4 channels, it
will be almost the same sound field as the sound field for recording. There is a feature that can
be reproduced.
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