Hearing aid

Details Hearing aid Hearing aid

1993-04-30

1995-09-05

Kuntz, Curtis

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 682, H04R 2500

Patent

active

054486440

ABSTRACT:
In a hearing aid having an input transducer (2), a useful signal processor (4 through 9) having an output stage (9), and an output transducer (11), whereby a first time-discrete useful signal processing is provided preceding the output stage (9), and controlled by a sampling signal, a second time-discrete useful signal processing different therefrom is simultaneously employed without disturbing influences. To that end, a second time-discrete useful signal processing with a pulse-duration modulation is provided in the output stage (9), this being formed by a delta signal, whereby the sampling signal and the delta signal are derived from only one oscillator (12).

REFERENCES:
patent: 4187413 (1980-02-01), Moser
patent: 4187466 (1980-02-01), Kasson et al.
patent: 4360707 (1982-11-01), Joseph et al.
patent: 4524334 (1985-06-01), Brajder et al.
patent: 4592087 (1986-05-01), Killion
patent: 4689819 (1987-08-01), Killion
Article from the book: Halbleiterschaltungstechnik, 6th edition, Tietze & Schenk, Springer-Verlag, Berlin, 1983, p. 462.

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