Patent ID: 9699585
Date: 2017-07-04
CPC Classifications: G10L,H04S

Claim:
1. Multi-channel decoder for generating an energy-corrected binaural signal from a downmix signal derived from an original multi-channel signal using parameters including an upmix rule information useable for upmixing the downmix signal with an upmix rule, the upmix rule resulting in an energy-error, comprising: a gain factor calculator configured for calculating at least one gain factor for reducing or eliminating the energy-error obtainable by the upmixing of the downmix signal using the upmix rule, based on the upmix rule information and filter characteristics of head related transfer function based filters corresponding to upmix channels, wherein the gain factor calculator is operative to calculate the gain factor based on the following equation: wherein g a filter processor configured for filtering the downmix signal using the at least one gain factor, the filter characteristics of the head related transfer function based filters and the upmix rule information to obtain the energy-corrected binaural signal.