Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1994-09-26
1996-06-18
Kuntz, Curtis
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 94, 381106, H04R 2500
Patent
active
055286968
ABSTRACT:
A hearing aid with a microphone, a preamplifier connected behind it which is connected to a signal processing voltage-controlled circuit which is provided with a voltage-controlled filter, for example, which is connected to the output amplifier controlling an earpiece. In order to achieve the best possible adaptation it is provided that the signal processing voltage-controlled circuit is connected to a signal analysing circuit (MAC) controlling it, which is in connection on the input side with the preamplifier or output amplifier (30, 50) and is substantially formed by a Hilbert circuit (HS), the two outputs (A, F) of which supplying the momentary values of the frequency and the amplitudes of the input signal are connected to the inputs of corresponding Hilbert circuits via high-pass filters and the outputs of all three Hilbert circuits are in connection with the control inputs of a voltage-controlled signal processing circuit (40).
REFERENCES:
patent: 4461025 (1984-07-01), Franklin
patent: 4495643 (1985-01-01), Orban
patent: 5394475 (1995-02-01), Ribic
Kuntz Curtis
Le Huyen D.
Viennatone Gesellschaft m.b.H.
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