MULTI-CHANNEL SIGNAL ENCODING AND DECODING METHOD, APPARATUS, AND SYSTEM

摘要

A multi-channel signal encoding method includes: determining a sum of channel level differences (CLDs) of a current frame of a multi-channel signal in a certain frequency band area; determining an average value of sums of channel level differences of at least two frames before the current frame in the certain frequency band area; according to the sum of channel level differences of the current frame of the multi-channel signal in the certain frequency band area, the average value of the sums of channel level differences of at least two frames before the current frame in the certain frequency band area, and a preset threshold, judging whether the channel level differences of the current frame are in a transient state or a non-transient state, and obtaining a judgment result; and according to the judgment result, performing quantization processing on the channel level differences of the current frame of the multi-channel signal.