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US20130117028A1 APPARATUS AND METHOD FOR CODING SIGNAL IN A COMMUNICATION SYSTEM 有权
在通信系统中编码信号的装置和方法

APPARATUS AND METHOD FOR CODING SIGNAL IN A COMMUNICATION SYSTEM
Abstract:
Disclosed are an apparatus for coding a signal in a communication system including: a coding unit configured to code voice and audio signals based on a code excited linear prediction (CELP) coding method; a residual signal calculation unit configured to calculate residual signals of the voice and audio signals; a frequency transform unit configured to transform the residual signal into a signal in a frequency domain; an energy calculation unit configured to use frequency coefficients of the residual signals to calculate frequency energy of the residual signals; an energy concentration calculation unit configured to calculate energy concentrations of each vector dimension of the residual signals from the frequency energy of the residual signals; and a vector dimension determination unit configured to compare the energy concentrations of each vector dimension to determine targeted vector dimensions of the residual signals.
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