Fast estimation of spectral noise power density for speech signal enhancement

摘要

The invention relates to a method for providing an estimate of a spectral noise power density of an audio signal, comprising providing a first estimate of a spectral noise power density of the audio signal, determining a time dependent correction term, summing the first estimate and the correction term to obtain a second estimate of the spectral noise power density of the audio signal, wherein the correction term is determined such that a spectral noise power density estimation error is reduced.