Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent
1987-07-08
1988-08-16
Isen, Forester W.
Electrical audio signal processing systems and devices
Binaural and stereophonic
Hearing aid
381 90, 381188, 381205, H04R 502
Patent
active
047649607
ABSTRACT:
First left and right channel loudspeakers having respective main axes of directivities directed toward left and right listening areas defined in front thereof are provided. In addition, there are provided a second right channel loudspeaker near the first right channel loudspeaker with a main axis of directivity directed toward the left listening area, a second left channel loudspeaker near the first left channel loudspeaker with a main axis of directivity directed toward the right listening area, and signal adjusting means for controlling the relative amplitude and time difference among the signals to be supplied to these loudspeakers.
REFERENCES:
patent: 4703502 (1987-10-01), Kasai et al.
Aoki Shigeaki
Koizumi Nobuo
Isen Forester W.
Nippon Telegraph and Telephone Corporation
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