Method of and arrangement for linearizing the frequency response

Details Method of and arrangement for linearizing the frequency response Method of and arrangement for linearizing the frequency response

1989-10-27

1991-11-26

Isen, Forester W.

Electrical audio signal processing systems and devices

Loudspeaker feedback

381 59, 381 98, H04R 300

Patent

active

050689037

ABSTRACT:
The frequency response of a loudspeaker system can be linearized in a simple manner by negative voltage feedback. However, pure negative voltage feedback has the disadvantage of compensating mechanical resonance phenomena of the loudspeaker system only incompletely. A method and an arrangement are proposed in which the feedback signal is derived from the impedance of the loudspeaker system. The measure of the impedance of the loudspeaker system is the current flowing through the loudspeaker system. The signal corresponding to the impedance is filtered and fed back to the input of the power amplifier.

REFERENCES:
patent: 3872247 (1975-03-01), Saville et al.
patent: 4712247 (1987-12-01), Swarte
patent: 4797933 (1989-01-01), Hahne
patent: 4908870 (1990-03-01), Nagi

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