Parametric multi-channel audio representation

With the audio signal and capable of realizing information of multi-sound a signal control The Dan the multi-sound rail audio signal to a shaft, wherein the single with the signal and information and restoring to the multi-sound rail audio signal. The information by aiming at the multi-sound rail audio signal the first frequency range of determining the information the first part, aimed at the multi-sound rail audio signal the second frequency range determining the information the second part generating. The second frequency range of the first frequency range part; and invention is wherein the first frequency range a sub-range. The information of the multi-layer information, and application of the bit rate regulating decoding quality.