Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1990-01-17
1991-02-26
Isen, Forester W.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381107, H04R 2500
Patent
active
049967126
ABSTRACT:
A hearing aid comprising an automatic gain control arrangement which provides an output signal of substantially constant average level. The automatic gain control arrangement has a slow control generator which provides a relatively slow release time and adapts the gain to the average level of the input signal, and a fast generator which provides a relatively fast release time to allow impulsive sounds or transient signals to be accommodated. When a sufficiently loud impulsive sound is received, the fast generator takes control of the gain to avoid discomfort or overloading. The automatic gain control arrangement limits the dynamic range for sound pressure levels above a threshold, such as 60 dB SPL.
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Laurence, deceased Roger F.
Morgan, executor Leon R.
Isen Forester W.
National Research Development Corporation
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