An intermediate channel representation of a multi-channel signal can be reconstructed highly efficient and with high fidelity, when upmix parameters for upmixing a transmitted downmix signal to the intermediate channel representation are derived that allow for an upmix using the same upmixing algorithms...http://www.google.com.tw/patents/US7965848?utm_source=gb-gplus-share專利 US7965848 - Reduced number of channels decoding
