Sound reproduction system

Details Sound reproduction system Sound reproduction system

1986-07-22

1989-04-18

Isen, Forester W.

Electrical audio signal processing systems and devices

Including frequency control

Having automatic equalizer circuit

H03G 500

Patent

active

048233919

ABSTRACT:
A sound reproduction system for automatically adjusting the output characteristics of a speaker or speakers in response to the acoustical characteristics of the external environment for the speakers by the use of sensors operatively connected to a microprocessor which in turn is connected to further processing in a digital preamplifier which processing includes comparison of data received from the sensor about the environment and the audio signal treatment by the environment and alters the output of the digital preamplifier to compensate for the environment and changes in the environment.

REFERENCES:
patent: 3922488 (1975-11-01), Gabr
patent: 3937887 (1976-02-01), Miller
patent: 3941932 (1976-03-01), D'Hoogh
patent: 3949325 (1976-04-01), Berkovitz
patent: 4109107 (1978-08-01), Boast
patent: 4139733 (1979-02-01), Falkenberg
patent: 4229618 (1980-10-01), Gamble
patent: 4254303 (1981-03-01), Takizawa
patent: 4458362 (1984-07-01), Berkovitz et al.
patent: 4549289 (1985-10-01), Schwartz et al.
patent: 4553257 (1985-11-01), Mori et al.
patent: 4611343 (1986-09-01), Rapaich
Radio Shack Catalog, 1985, p. 5, Amazing Compact Disc Digital Audio Player.

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