Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1991-10-30
1994-05-31
Kuntz, Curtis
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 682, 381106, 330251, H04R 2500
Patent
active
053176405
ABSTRACT:
In a hearing aid having a switched amplifier, an amplifier circuit is provided so that the pulse amplitude of the switched output signal is adjusted as a function of the envelope of the audio signal to be amplified. A controllable amplifier is switched in series ahead of the switched amplifier, whereby its control by the audio signal to be amplified proceeds in such a manner that the product of the amplifications of the two amplifiers remains constant for all audio signal levels.
REFERENCES:
patent: 3229049 (1966-01-01), Goldberg
patent: 4390849 (1983-06-01), Miskin
patent: 4592087 (1986-05-01), Killion
patent: 4689819 (1987-08-01), Killion
patent: 4829270 (1989-05-01), Anderson et al.
Ascom Audiosys AG
Kuntz Curtis
Le Huyen D.
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