Adaptive signal strength and/or ambient noise driven audio shapi

Details Adaptive signal strength and/or ambient noise driven audio shapi Adaptive signal strength and/or ambient noise driven audio shapi

1985-11-27

1988-08-02

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

455213, 455312, H03J 1500, H03J 116

Patent

active

047618299

ABSTRACT:
An adaptive audio filter system is disclosed which comprises a filter means capable of producing a plurality of frequency response characteristics. A control signal generating means provides a control signal to the filter means to enable a particular frequency response. The control signal is based upon the signal to noise ratio.

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"MOS Switched-Capacitor Filters" by Robert W. Brodersen et al. Proceedings of the I.E.E.E., vol. 67, No. 1, Jan. 1979, pp. 61-75.

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