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Title: Audio processor circuit for an FM-stereo radio receiver

Abstract: An audio processor is disclosed which includes circuitry for modifying pure left and right audio signals by blending the left audio signal with the right audio signal as a function of frequency and for rolling off the higher frequencies of the blended signal. The processor further includes circuitry for selecting complementary portions of a blended, rolled-off audio signal and a pure audio signal as a function of the RF carrier strength to improve the overall listenability of the audio.


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Inventors: Gilbert, William F. (Kokomo, IN, US)
Schertz, Burtron D. (Kokomo, IN, US)
Smith, Wayne A. (Russiaville, IN, US)
Wilkinson, Lester (Kokomo, IN, US)

Application Number: 516797
Filing Date: 1974-10-21
Publication_date: 1976-04-20
Assignee: General Motors Corporation (Detroit, MI)
Primary Class(es): 381/10
Other Classes:
US Patent Ref:
3281533Oct, 1966Pflager et al.179/1.
3673342Jun, 1972Muller179/15.

Other Refs:
Primary Examiner: Claffy, Kathleen H.
Assistant Examiner: Stellar, George G.
Attorney: Duke; Albert F.