Stereo coding method and device
A stereo and encoding technology, applied in the multimedia field, can solve the problems of inability to achieve realistic restoration, uncomfortable listening experience of the listener, and inability to meet the recovery requirements, and achieve the effect of improving encoding efficiency and enhancing sound field effects.
Inactive Publication Date: 2013-10-23
HUAWEI TECH CO LTD
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Abstract
The embodiment of the invention relates to a stereo coding method, which comprises the following steps of transforming a left channel signal and a right channel signal of stereo in a time domain into a frequency domain to form a left channel signal and a right channel signal in the frequency domain; performing down-mixing on the left channel signal and the right channel signal in the frequency domain to generate a single-channel down-mixed signal, and transmitting bits of the coded and quantized down-mixed signal; extracting spatial parameters of the left channel signal and the right channel signal in the frequency domain; estimating a group delay and a group phase between the left and right channels of the stereo by utilizing the left channel signal and the right channel signal in the frequency domain; and quantitatively coding the group delay, the group phase and the spatial parameters to achieve high stereo coding performance under a low code rate.
Application Domain
Speech analysis
Technology Topic
Stereophonic soundFrequency domain +4
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