Noise compensation arrangement

Details Noise compensation arrangement Noise compensation arrangement

1983-07-26

1988-01-19

Kemery, E. S.

Boots, shoes, and leggings

381 43, G10L 500

Patent

active

047208023

ABSTRACT:
Adaptive speech recognition is improved by extracting an estimate of the background noise during unknown speech input, and using the noise estimate to modify the noiseless prestored reference speech signals for comparison with the input. Averaged values of autocorrelation coefficient and Toeplitz matrix elements representative of noise frames and prestored reference frames are used to calculate the LPC predictor signals.

REFERENCES:
patent: 3403224 (1968-09-01), Schroeder
patent: 3855423 (1974-12-01), Brendzel et al.
patent: 4092493 (1978-05-01), Rabiner et al.
patent: 4100370 (1978-07-01), Suzuki et al.
patent: 4481593 (1984-11-01), Bahler
patent: 4538295 (1985-08-01), Noso et al.

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