PARAMETRIC COMPOSITE CODING AUDIO SOURCES Russian patent published in 2009 - IPC G10L19/00 H04S3/00 

FIELD: physics; acoustics.

SUBSTANCE: invention relates to coding several signals from audio sources, which must be transmitted or stored with the objective of mixing in order to synthesise a wave field, signals for multichannel three-dimensional or stereophonic audio after decoding signals from the sources. The proposed method provides for efficient composite coding signals compared to their separate coding, even when there is no redundancy between the signals. This is possible due to statistical properties of signals, properties of the coding method and spatial hearing. The sum of the signals is transmitted together with the statistical properties, which mainly determine spatial features for final mixed audio signals which are important for perception. The signals are reconstructed in a receiver so that statistical properties are approximately identical to corresponding properties of initial signals from the sources.

EFFECT: more efficient coding when mixing coded signals.

22 cl, 14 dwg