Inter-channel phase difference parameter encoding method and apparatus

The present application describes a method of encoding inter-channel phase difference parameters, the method comprising: acquiring a reference parameter configured to determine an inter-channel phase difference (IPD) parameter encoding mode of a current frame of a multi-channel audio signal; determining, according to the reference parameter, the IPD parameter coding mode of the current frame, the determined IPD parameter coding mode of the current frame being one of at least two predetermined IPD parameter coding modes; and performing, according to the determined IPD parameter coding mode of the current frame, IPD parameter processing of the current frame. The technical solution provided in this application improves the coding quality of a multi-channel audio signal. (Automatic translation with Google Translate, no legal value)