Gains quantization for a celp speech coder

Each voice frame cycle decomposition and classification into class a voice or non-voice encoder class cycle, here is speech coder based on speech are different gain quantization process is cyclical. If the speech is cyclical, improved speech coder has never obtained quantitative weighting of speech signal pitch gains and in advance of the child frame for each frame in the frames of Adaptive vector quantization Codebook gain GP and GC closed-loop delay to determine fixed Codebook gain vector quantization. If the voice frame is cyclical, speech codec can use either known to gain quantitative method. Voice in this way to cycle gain measurable results can be quantified gain information by reducing the number of required bit, cyclical voice, caused by quantization of pitch gain for the current child found searching fixed Codebook as the current daughter frame find code book excited vector capacity reduced. In addition, only for periodic signals gain new quantization method can also be used for non-periodic signals. Second programme resulted in slightly higher than for the cycle signal bit rate, the periodic signal using a new gain quantization scheme, but still lower than the bit rate of existing technologies. However, another option is a gain for all voice signals using a new quantization method does not distinguish between periodic and non-periodic signals.