Audio coding

A to at least comprises first signal component (LF) and second signal component (LR) and a signal component (radiofrequency) multi-sound channel audio signal and coding method. The method comprises the steps: (202) Is coded first of the first parameter encoder and second signal generation device is coded signal (L) and first group of encoding, parameter(201) Is coded the first coded signal and signal (R) and second encoder parameter, generating second coded signal (T) and second set of encoding parameters, the other signal at least came from the third signal; deviceAnd at least composed at least columns from coded signal (T) of the second coded signal generation unit, the multi-sound channel audio signal by a first set of encoding parameters and a second set of encoding parameter.