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JPS55168289

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DESCRIPTION JPS55168289
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a general view showing the device of the
present invention in a use position, FIG. 2 is a perspective view of one embodiment of the same,
and FIG. 3 is a front view of another embodiment. 1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · artificial ears, 5 · · · microphone · 6 · · · ..... Case body, 8 .....
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for
stereo recording and monitoring audio at binaural positions. Stereo recording at the binaural
position requires two microphones located at a dummy (dummy) head or directly adjacent to the
listener's head ear. In conventional microphones, so-called sound field effects occur, particularly
when listening using the head 7 on, because there are changes in the sound field and phase
differences. If a pseudo head is used for sound recording, it is possible to listen without
producing the above-mentioned effects of “t”, “7”,... It becomes. This pseudo-head is
generally stationary and therefore provided with a mechanical control, which can be pivoted
during recording. The method of using a person's head instead of the pseudo head has also
become common. In this case, two microphones fixed to the U-shaped connecting piece are
simply hooked and arranged immediately in front of the ear canal, in which case the ear canal is
not blocked. And the voice to be recorded by the microphone is directly heard. Therefore, the
person can not check the recording quality by himself. The purpose of the present invention is to
propose an apparatus capable of performing an optimal and lively recording by solving this
drawback and moving the head and simultaneously checking the sound quality. The present
invention is an apparatus for stereo recording and monitoring of sound at binaural position,
which comprises the unit # t2 head phone / microphone assembly, each microphone for sound
recording is a case of a transducer for sound reproduction and-λ body. It is characterized by
being provided in In one embodiment of the invention, on the outside of each transducer case, an
auricle of similar shape to the listener's ear, for example made of soft plastic, is placed and a
microphone or microphone opening for recording in the center Provide In another embodiment
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of the present invention, the case of the sound reproduction transducer is formed into a spherical
shape which can be inserted closely into the ear canal, and the micro mmen 2 is directly disposed
on the outside opposite to the reproduction sound passage opening. If you do not need so high
accuracy, instead of combining the artificial auricle provided in one head woofer with an
omnidirectional microphone, provide an omnidirectional microphone on any head 7 and turn the
head 7 The microphone may be arranged so that the pointing direction of the microphone
matches the viewing direction of the user at the ON use position. By using the head 7 on /
microphone assembly according to the invention for stereophonic recording reproduction at the
binaural position, the sound recorded by the microphone: (... It becomes possible to monitor the
voice during recording.
In order to prevent feedback from the sound source to the microphone, it is desirable to wear the
head 7 on closely, i.e. closing the user's ear. However, even if the head 7 on is not necessarily
attached to the XM cage, it is 4-way to block acoustic feedback. As described above, according to
the present invention, it is possible to check the change of the sound field by turning on the head
7. At that time, the sound is strongly or weakly supplied, or the already recorded signal is
supplied through a tape recorder or the like. Because it can also be done, it is possible to make a
recording that has been artificially removed from the natural balance, or to make a recording
with an optimal natural rhythm. The device further provides for greater directionality at the time
of listening by providing a larger artificial ear shell, and also for listening at higher sound levels
to capture far-off noises that are usually below the audible level. Another advantage of the
present invention is that stereo recording 7 at binaural position is performed with natural sound
field characteristic change by the user's head, and head movement simultaneously with listening
by head 7 on The effect is similar to listening directly. Hereinafter, the present invention will be
described with reference to the drawings. FIG. 7 shows an example in which the present
invention is applied to the head 7 on. This head 7 on has a headrest 1 and is provided at both
ends with a case 2 in which an electroacoustic transducer suitable for reproduction of sound is
housed. The microphones tTtsit respectively on the outside of the nurse 2 can also be arranged
in the transducer case in special cases, for example in order to exert a strong acoustical damping
load, in which case the case outside the headphones is in this case Will provide an opening
through the microphone. The head 7 on / microphone assembly according to the present
invention can be constructed using a conventional head 7 on as shown in FIG. 1, which is another
embodiment of the present invention. Show. In this example, on the outside of the case of the
head 7 on, an artificial earlobe l shaped similar to the listener's t3 and full ear is formed of, for
example, soft plastic, and the microphone S is disposed in the center, When the microphone is
provided in the nurse, the microphone opening is formed. The microphone may be connected to
one end of a sound path formed in the ear. Needless to say, in order to use for stereo recording, it
is necessary to connect two cases shown in FIG. 2 by a connecting piece.
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As mentioned above, an artificial earlobe q shaped similar to the listener's ear can be made
somewhat larger than in the usual case to obtain a special acoustic effect. FIG. 3 also shows
another embodiment of the present invention with only one side of the head 7 on. In this
example, the case of the transducer that emits sound is formed into a spherical shape so as to be
inserted closely into the listener's ear canal, and is composed of the insertion piece 7 and the
transducer case main body 6. Only a part of the connecting piece l connecting these two cases is
shown. The microphone If is arranged outside the case main body so that when the head 7 is
inserted, the listener's own ear shell acts directly, and the artificial ear shell becomes
unnecessary. The scope of application of the present invention is not limited to just stereo
recording technology. The present invention can also be applied, for example, to compare or
check a pure decoration change (original sound) and a recorded signal (reproduced sound).
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