Patent ID: 9082411
Filing Date: 2015-07-14
Classification: G10L

Abstract:
1. A method of reducing artifacts in an audio processing algorithm for applying a time and frequency dependent gain to an input signal, the method comprising: Providing a time frequency representation i(k,m) of an input signal in a number of consecutive time frames, each time frame comprising a number of time-frequency units, each time-frequency unit comprising a complex or real value of the input signal, k, m being frequency and time indices respectively; Applying the audio processing algorithm to said time frequency representation of said input signal and providing an estimated algorithm output signal; Determining for at least one frequency of said input signal a difference between a value of the estimated algorithm output signal in a time-frequency unit of a given time frame and that of a preceding time frame; Determining a measure of the magnitude of said difference; Providing a time averaged value of the measure of the magnitude difference; and Providing a confidence estimate based on said time averaged value of the measure of the magnitude difference, said confidence estimate decreasing from a maximum value towards a minimum value for increasing time averaged values of the measure of the magnitude difference.