CODING/DECODING METHOD, APPARATUS, AND SYSTEM

摘要

Provided in an embodiment of the present invention are a codec method, device and system, the coding method comprising: coding a full band signal de-emphasis-processed using a de-emphasis parameter determined according a characteristic factor of an audio input signal, and sending the de-emphasis-processed full band signal to a decoding end, such that the decoding end conducts corresponding de-emphasis decoding on the full band signal according to the characteristic factor of the audio input signal, restoring the audio input signal. The method solves the problem in prior art of a high chance of signal distortion in an audio signal restored at a decoding end, achieves self-adaptive de-emphasis processing of the full band signal according to the characteristic factor of the audio signal, and enhances coding performance, so that the audio input signal restored at the decoding end has higher fidelity and is closer to an original signal.