Frequency division, energy comparison signal processing system

Details Frequency division, energy comparison signal processing system Frequency division, energy comparison signal processing system

1991-06-10

1993-11-09

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

73648, 364484, 381 45, 382 17, 382 29, G06K 900, G10L 500

Patent

active

052610071

ABSTRACT:
A frequency division, energy comparison signal processing system for detecting the presence of, and separating the contributions from, sources that compose a wide-band sound signal, in which the system divides at least part of the wide-band sound signal into a number of discrete narrow frequency band components, generates the energy envelope of each of those components, normalizes the envelopes, multiplies each normalized envelope with each of the other normalized envelopes to obtain a plurality of envelope correlation coefficients for each frequency band, and then identifies from the correlation coefficients a sound source seed frequency band component and then, using the seed, identifies the remaining frequency components of a sound source.

REFERENCES:
patent: 4383135 (1983-05-01), Scott et al.
patent: 5119432 (1992-06-01), Hitsch

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