Audio system operable in directional and non-directional modes

Details Audio system operable in directional and non-directional modes Audio system operable in directional and non-directional modes

1990-10-24

1992-12-22

Dwyer, James L.

Electrical audio signal processing systems and devices

Having non-electrical feature

Loudspeakers driven in given phase relationship

381 98, 381155, 381160, 181155, H04R 102, H04R 2500

Patent

active

051739429

ABSTRACT:
An audio system includes a speaker unit having an opening in its front surface supporting a speaker and a diffuser with a reflecting surface detachably attached to the speaker unit and positioned opposite to the speaker and in front of the opening such that sound waves from the speaker are diffused by the reflecting surface of the diffuser to propagate radially. A multi-channel amplifier for driving the speaker includes a compensating circuit for correcting the output level and frequency characteristic of the system when the diffuser is attached.

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patent: 4182931 (1980-01-01), Kenner
patent: 4348549 (1982-09-01), Berlant
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patent: 4477699 (1984-10-01), Wada et al.
patent: 4610024 (1986-09-01), Schulhof
patent: 4620317 (1986-10-01), Anderson
patent: 4648117 (1987-03-01), Kunugi et al.

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