Signal processor

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

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342159, H04B 106

Patent

active

051795426

ABSTRACT:
A signal processor which operates on an incoming signal to separate the signal into locally compact wavelets in the time frequency domain is described. The processor includes means for separating an incoming signal into a plurality of signals, with said signals occupying one of a corresponding plurality of channels, with each channel having a predetermined passband characteristic. The processor further includes means for scaling the filtered signals from the plurality of channels by an estimate of background noise in the filter data and detector means fed by said plurality of scaled signals for integrating coherent components of said filtered scaled signals.

REFERENCES:
patent: 4622552 (1986-11-01), Andrews et al.
Colburn, H. Steven, "Theory of Binaural Interaction Based on Auditory-nerve Data. I. General Strategy and Preliminary Results on Interaural Discrimination" 1973, The Journal of the Acoustical Society of America, vol. 54, No. 6, pp. 1458-1470.
Kroszczynski, Jan J., "Pulse Compression by Means of Linear-Period Modulation" Jul. 1969, Proceedings of the IEEE, vol. 57, No. 7, pp. 1260-1266.
Lyon, Richard F., "A Computational Model of Filtering, Detection, and Compression in the Cochlea" 1982 IEEE, pp. 1282-1285.
Seneff, Stephanie, "A Joint Synchrony/Mean-rate Model of Auditory Speech Processing," 1988, Journal of Phonetics, 16, pp. 55-76.
Simmons, James A., "A View of the World Through the Bat's Ear: The Formation of Acoustic Images in Echolocation" 1989, Cognition 33, pp. 155-199.

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