AUDIO SIGNAL PROCESSING DEVICE AND METHOD Russian patent published in 2014 - IPC G10L19/02 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to audio signal transmission and is intended for processing an audio signal by varying the phase of spectral values of the audio signal, realised in a bandwidth expansion scheme. The audio signal processing method and device comprise a window processing module for generating a plurality of successive sampling units, a plurality of successive units including at least one added audio sampling unit, an added unit having added values and audio signal values, a first converter for converting the added unit into a spectral representation having spectral values, a phase modifier for varying the phase of spectral values and obtaining a modified spectral representation and a second converter for converting the modified spectral representation into a time domain varying audio signal.

EFFECT: high sound quality.

20 cl, 15 dwg