Noise suppressing apparatus and its adjusting apparatus

Details Noise suppressing apparatus and its adjusting apparatus Noise suppressing apparatus and its adjusting apparatus

1992-09-04

1994-08-02

Knepper, David D.

395 235, G10L 302

Patent

active

053353129

ABSTRACT:
The adjustment of a noise suppressing apparatus inputs the voice signal with the noises being piled up in it to decide the weight coefficient of the neutral network 130 with a back propagating method so that the errors of the output signal and of the noiseless signal may become minimum, the noise suppressing apparatus where noises in a voice signal are suppressed even in a situation where the positional relation between the noise source and the voice source may often change, and noises offensive to the voice after the noise suppression may not remain, the suppressing effect is not deteriorated even if the time pattern of the input signal is varied.

REFERENCES:
Kroschel, K, "Methods for Noise Reduction Applied to Speed Input Systems," Proc. VLSI and Computer Peripheral, vol. 2, pp. 82-87, IEEE, 1989.
Anderson B et al., "A Method for Noise Filtering with Feed-Forward Neural Networks: Analysis and Comparison with Low-Pass and Optimal Filtering," Int'l Joint Conference on Neural Networks, vol. 1, pp. 209-214, IEEE, 1990.

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