Narrow band digital filter

Details Narrow band digital filter Narrow band digital filter

1981-10-16

1984-04-10

Smith, Jerry

Boots, shoes, and leggings

375 96, 328167, H04B 116

Patent

active

044425007

ABSTRACT:
A narrow band digital filter is disclosed for rejecting all undesired frequencies, providing a binary signal indicative of when the input frequency is within an acceptance band. The digital filter may be placed within a stereo AM receiver to monitor the pilot tone of the incoming signal with clocking pulses provided by the IF stage of the radio receiver.

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patent: 4137510 (1979-01-01), Iwahara
patent: 4344038 (1982-08-01), Streeter
patent: 4351032 (1982-09-01), Challen

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