decoder and method for extracting headphone down mix signal, decoder for extracting spatial stereo down mix signal, receiver or player, and method of receiving or playing audio and storage media

摘要

DECODER AND METHOD FOR EXTRAPING EARPHONE DOWN MIX SIGNAL, DECODER FOR EXTRACTING DOWN MIX SIGNAL SPEAKER, RECEIVER OR PLAYER AND AUDIO RECEIVING OR STORAGE METHOD. The present invention relates to the down mix for headphones (314) which can be efficiently extracted from a multi-channel parametric stereo conversion of a multichannel signal (312) when modified FTAs (310) relative head transfer) are extracted from FTAs (308) of a multichannel signal using a level parameter (306) provided with information about the level relationship between two channels of multichannel signals such that modified FTAs ( 310) are more strongly influenced by the FTA 308 of a higher end channel than the FTA 308 of a lower end channel. Modified FTAs (310) are extracted in the decoding process taking into account the relative strength of the channels associated with the FTAs (308). The FTAs (308) are thus modified such that a down mix (314) of the parametric representation of a multi channel signal can be directly used to promote down mix synthesis for the headphones (314) without the need for an intermediate total parametric multichannel reconstruction of the parametric conversion of multichannels to stereo signal.