Patent ID: 7957543
Filing Date: 2011-06-07
Classification: G10L,H04R

Abstract:
1. A method for processing an analog acoustic signal, particularly for processing an audio signal in a listening device, the method comprising: converting the analog acoustic signal into a digital signal; and processing the digital signal for specific blocks of input data at a block processing frequency, wherein said processing of said digital signal results in a noise signal superposed on the digital signal, the processing comprising: wherein converting the digital signal from a time domain to a frequency domain includes determining a complex transformation value, where said noise signal is, for each determined frequency band, filtered out of said complex transformation value by subtracting a first correction value from a real part of said complex transformation value to obtain a corrected real value and by subtracting a second correction value from an imaginary part of said complex transformation value to obtain a corrected imaginary value, and when the absolute value of the corrected real value is below a predetermined threshold value, the frequency band is determined to include the noise signal.