An encoder/decoder for multi-channel audio data, and in particular for audio reproduction through wave field synthesis. The encoder comprises a two-dimensional filter-bank to the multi-channel signal, in which the channel index is treated as an independent variable as well as time, and and the resulting spectral coefficient are quantized according to a two-dimensional psychoacoustic model, including masking effect in the spatial frequency as well as in the temporal frequency. The coded spectral data are organized in a bitstream together with side information containing scale factors and Huffman codebook identifiers.
40622254
Alternative title(s) : (de) Audiowellenfeld codierung (fr) Encodage de champ d'ondes audio
TTO:6.0788
Patent number | Country code | Kind code | Date issued |
EP2107833 | EP | B1 | 2017-08-23 |
US8219409 | US | B2 | 2012-07-10 |
EP2107833 | EP | A1 | 2009-10-07 |
US2009248425 | US | A1 | 2009-10-01 |