Audio mirror speaker

Details Audio mirror speaker Audio mirror speaker

1994-08-08

1996-01-16

Swarthout, Brent A.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Hearing aid

381 88, 381 90, 381160, 181155, H04R 500

Patent

active

054855217

ABSTRACT:
In an audio mirror speaker, an uneven area is formed on a planar mirror surface and a directivity distribution is controlled by changing a relative position of a diaphragm facing the mirror surface and the mirror. The directivity distribution of such a speaker is determined by a radius of curvature of the uneven area. Since the directivity changes with various movements of the planar mirror, a freedom in setting the directivity distribution is enhanced.

REFERENCES:
patent: 3500953 (1970-03-01), Lahti
patent: 3818138 (1974-06-01), Sperrazza, Jr.
patent: 4058675 (1977-11-01), Kobayashi et al.
patent: 4251687 (1981-02-01), Deutsch
patent: 4256922 (1981-03-01), Gorike
patent: 4418243 (1983-11-01), Fixler
patent: 4441577 (1984-04-01), Kurihara
patent: 4701951 (1987-10-01), Kash
patent: 4882753 (1989-11-01), Shivers
patent: 4882760 (1989-11-01), Yee
patent: 5031220 (1991-07-01), Takagi et al.

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