Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1995-06-07
1998-01-27
Kuntz, Curtis
Electrical audio signal processing systems and devices
Sound effects
Reverberators
H04R 2500
Patent
active
057129193
ABSTRACT:
A self-contained hearing aid has a housing which contains a microphone, a miniature speaker, an amplifier which amplifies signals from the microphone and supplies them to the speaker, and a capacitor which serves as the sole source of power for the amplifier during normal operation of the hearing aid. An arrangement for recharging the capacitor may include a pair of charging terminals within the hearing aid, and a recharging unit that is separate from the hearing aid and has a case with two probes which are coupled to a battery in the case and which can each engage a respective charging terminal. An alternative charging arrangement includes within the hearing aid a coil and a rectifier circuit coupling the coil to the capacitor, and includes a recharging unit which is separate from the hearing aid and has a further coil driven by an AC signal.
REFERENCES:
patent: 2197314 (1940-04-01), Olson
patent: 3354271 (1967-11-01), McDermaid
patent: 4272591 (1981-06-01), Brander
patent: 4736583 (1988-04-01), Hudema et al.
patent: 5111506 (1992-05-01), Charpentier et al.
patent: 5591217 (1997-01-01), Barreras
Barnie Rexford N.
Kuntz Curtis
Multi-Line Designs, Inc.
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