Patent ID: 9514762
Filing Date: 2016-12-06
CPC Classification: G10L

Claim Text:
1. An audio signal coding method, comprising: categorizing, by a categorizing unit of an encoder, audio signals into high-frequency audio signals and low-frequency audio signals; coding, by a low-frequency signal coding unit of an encoder, the low-frequency audio signals by using a time domain coding manner or a frequency domain coding manner; and selecting, by a high-frequency signal coding unit of an encoder, a bandwidth extension mode to code the high-frequency audio signals according to a low-frequency coding manner or characteristics of the audio signals; and wherein selecting the bandwidth extension mode to code the high-frequency audio signals according to the low-frequency coding manner comprises if the low-frequency audio signals should be coded by using the time domain coding manner, selecting a time domain bandwidth extension mode to perform time domain coding for the high-frequency audio signals.