Noise reduction filter

Details Noise reduction filter Noise reduction filter

1996-07-12

1998-04-21

Kuntz, Curtis

Electrical audio signal processing systems and devices

Noise or distortion suppression

Spectral adjustment

H04B 1500

Patent

active

057426945

ABSTRACT:
A noise reduction filter for enhancing noisy audio signals, such as speech or music. In accordance with the invention, a noisy signal is passed through a first adaptive prediction filter so as to obtain a first signal component corresponding to the predictable part of the noisy signal and a second signal component corresponding to a prediction error. The first and second signal components are each attenuated respectively, according to the levels of signal and noise in each component, and then recombined to form an enhanced output signal.

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