要想得到好的性能编码，

仅采用标量量化是不可能的。

当把多个信源符号

联合起来形成多维矢量，

再对矢量进行标量量化时自由度将更大，

同样的失真下，

量化基数可进一步减少，码率可进一步压缩。这种量化叫矢量量化

-To get better performance coded using only scalar quantization is impossible. When a plurality of source symbols are combined to form multi-dimensional vector, and then the vector is scalar quantization will be greater degrees of freedom, the same distortion, the quantization can be further reduced base, rate can be further compressed. This quantification is called vector quantization