Low complexity noise reduction method

Details Low complexity noise reduction method Low complexity noise reduction method

2011-08-30

2011-08-30

Saint Cyr, Leonard (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S227000, C704S228000, C704S265000

Reexamination Certificate

active

08010355

ABSTRACT:
A method of reducing noise in a speech signal involves converting the speech signal to the frequency domain using a fast fourier transform (FFT), creating a subset of selected spectral subbands, determining the appropriate gain for each subband, and interpolating the gains to match the number of FFT points. The converted speech signal is then filtered using the interpolated gains as filter coefficients, and an inverse FFT performed on the processed signal to recover the time domain output signal.

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