Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1988-02-04
1990-09-04
Chin, Tommy P.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
G10H 104
Patent
active
049550578
ABSTRACT:
A reverb generator comprises a delay circuit for delaying an input audio signal, a feed back path connecting an output port of the delay circuit to its input port, and a phase shifter connected in series to the delay circuit. The phase shifter produces a dispersion in the spectrum of the input audio signal in accordance with frequency dependent delay characteristic in such a manner that the delay time is large in a low frequency range and small in a higher frequency range. By including the phase shifter in the feed back path, one can obtain an output audio signal having a spectrum which is repeatedly subjected to dispersion, thus simulating the effect of dispersion due to the multiple reflections taking place in an actual concert hall.
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M. R. Schroeder, Journal of the Audio Engineering Society, Jul. 10, 162, vol. 10, No. 3.
Chin Tommy P.
Dynavector, Inc.
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