Patent ID: 8103008
Filing Date: 2012-01-24
Classification: H03G,H04S

Abstract:
1. A method of adjusting an audio signal comprising multiple frequency bands to improve perception of the signal in the presence of a sound other than the audio signal, the method comprising: performing a first loudness approximation on a plurality of frequency bands of the audio signal, resulting in a first combined loudness measurement, wherein the first loudness approximation is based on a perceptual compression in at least one of the plurality of frequency bands to obtain an associated partial loudness; performing a second loudness approximation on the plurality of frequency bands of the audio signal in the presence of the sound other than the audio signal, resulting in a second combined loudness approximation measurement, wherein the second loudness approximation is based on a perceptual compression in at least one of the plurality of frequency bands to obtain an associated partial loudness; applying gain to the audio signal based on a comparison of the first and second combined loudness measurements; and playing the modified audio signal.