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(I) Industrial applications BACKGROUND OF THE INVENTION 1. Field of the Invention The
present invention relates to a hearing device for obtaining a sense of reality from reproduced
sound from a speaker, a mouth, and a prior art. Conventionally, in order to listen to the
reproduced sound from the speaker, there has been no one that directly listens to the vibration
sound of the speaker and intervenes the correction device in between. Ha, the problem that the
invention is trying to solve. Therefore, when reproducing a pure tone by a tuning fork, an
oscillator, etc., although an almost original sound can be obtained, when reproducing a plurality
of original sounds different in frequency, it is not possible to reproduce individual frequencies
independently. It is possible to play what is synthesized by the microphone, and the speaker
vibrates as it is synthesized, so the listener perceives the speaker as a source of synthesized
sound, so the presence of the speaker is liWF h 't and present There is no feeling and you will
hear something different from the original sound. (2) Means to solve the problem. Therefore, by
placing a sound insulation board of appropriate size just in front of one ear and in the other ear
immediately behind it, the playback sound from the speaker (directly to the ear and around the
back of the head and back Both of the ones that came from and made to cause a phase shift in
the left and right ears by bypassing the sound insulation board. (E), action. In this way, the
synthetic sound from the speaker causes a difference between the left and right ears due to the
difference in arrival and separation caused by the sound insulation board (FIG. 1), and the degree
of difference becomes different for each different frequency band . To the effect of the invention.
The reason why the position of the sound source can be confirmed is due to the frequency shift
due to the difference in distance from the left and right ear sound sources, and it seems that this
is not due to the strength or weakness of the sound. For example, when listening to a sine wave
due to a high frequency oscillating sound etc., it may not be possible to sense the level of the
source, but this is not a difference in the distance to the sound source of both ears but not the
strength of the sound. It has been proved that the position of the sound source should always be
recognized if it is due to the strength of the sound, and if the detection of the position of the
sound source is due to the frequency shift, it will be a high frequency sine wave On the other
hand, even when the difference in distance from the sound sources of both ears is slight, the
frequency shift is one cycle, and the shift is eliminated, so that it becomes difficult to recognize
the position. Therefore, according to the device of the present invention, when the sound from
Subie-Takichi causes a frequency shift, an illusion that the sound source is on the outside of the
speaker is produced, and the position varies depending on the individual frequency. This creates
the illusion of listening to the side frequencies independently, and the sound source diffuses out
of the speaker to give a sense of presence.
Brief description of the drawings
FIG. 1 is an explanatory view of the operation of the present invention.
FIGS. 2 to 4 are the present invention in which the left and right sound insulation plates are
connected by an elastic body, and FIG. 2 is a plan view. FIG. 3 is a front view. FIG. 4 is a right
(left) side view. 1 is a sound insulation board, 2 is an elastic body.