Automatic correction of loudness level in audio signals

Details Automatic correction of loudness level in audio signals Automatic correction of loudness level in audio signals

H - Electricity

04

R

H04R 3/00 (2006.01) H04R 29/00 (2006.01)

Patent

CA 2731066

The present invention relates to a method for adapting a gain of an audio output signal containing at least two different tracks with different signal level ranges, the method comprising the steps of: - dynamically determining a perceived loudness of an audio input signal based on a psychoacoustic model of a human, - dynamically determining a gain of the audio output signal output by a gain determination unit (35) receiving the perceived loudness and outputting the audio output signal with the determined gain, wherein the gain is determined in such a way that said at least two tracks of the audio output signal are output covering a predetermined range of signal levels or loudness range, - estimating an ambient noise in a space to which the audio output signal is output, and - determining to which extend the gain determined by the gain determination unit influences the audio output signal, wherein the extend by which an audio output is influenced by the gain determination unit, is determined based on the estimated ambient noise.

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