Predictive switched split vector quantiser of very low bit-rate speech coder
Yang Yu-cun · Jisuanji yingyong yanjiu · 2009
In order to reduce bit-rate and still maintain fine distortion performance,this paper proposed predictive switched split vector quantization method.It added memory according the characteristic of the LSP.And it was a hybrid of switched split vector quantization techniques.Experimental results show that the PSSVQ provides a better trade-off between bit-rate and distortion performance than the others.In addition,the PSSVQ has a lower computational(search) complexity at the expense of an increase in memory requirements.