Method and filter for enhancing a noisy speech signal

Details Method and filter for enhancing a noisy speech signal Method and filter for enhancing a noisy speech signal

1989-11-17

1992-09-15

Fleming, Michael R.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

36472419, G10L 302, G06F 1531

Patent

active

051484889

ABSTRACT:
A filter for filtering a speech signal to reduce acoustic noise is disclosed. In accordance with the inventive filter, the parameters of an all-pole vocal tract model are first estimated from the noisy signal using a least mean square algorithm as if no noise were present, and then the speech signal is filtered using an approximate limiting Kalman filter constructed according to the estimated parameters.

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