Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1997-04-28
1999-02-02
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 80, 327 81, 327 87, 327 61, H03K 5153, H03K 3017
Patent
active
058670440
ABSTRACT:
A circuit arrangement is disclosed which detects a signal pauses in an audio signal, The audio signal is amplified, rectified, and then sent to a control unit. The control unit periodically sets the output of the rectifier to a predetermined level below a threshold level. The control unit then waits a predetermined period of time and determines whether the signal at the output of the rectifier has exceeded the threshold. If is does not, a signal pause has occurred.
REFERENCES:
patent: 3727143 (1973-04-01), Garrett
patent: 4138615 (1979-02-01), McKinlay
patent: 4245167 (1981-01-01), Stein
patent: 4495428 (1985-01-01), Ishigaki
patent: 4499426 (1985-02-01), Parker
patent: 5099146 (1992-03-01), Miki et al.
patent: 5120995 (1992-06-01), Abdi
Data Sheet--TEA0675, Dual Dolby B-Type Noise Reduction Circuit for Playback Applications, Philips Semiconductors, Oct. 1992.
Manfred Riedel, "Suchen Und Finden", Funkschau 1977, Heft 24, Bd. 49, Nr. 24, Nov. 1977, Munchen, 1121-1123.
Anonymous: IBM Techinical Disclosure Bulletin, Bd. 20, Nr. 12, May 1978, New York, US. 5437-5440, "Amplitude Detection Method for Producing Rate Controlled Speech".
Knobl Karl-Heinz
Mutz Erhard
Callahan Timothy P.
Luu An T.
Rubin Steven S.
U.S. Philips Corporation
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