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Myquantize
- 用S函数编写的量化器 量化步长为非线性 即 量化步长可调 -Prepared by S function to quantify the quantizer step size for the non-linear quantization step size that is adjustable
PredictionLinear
- 一种代码激励线性预测编码器,其特征在于:具有声道信息生成器、声音功率量化器、自适应码表-A code excited linear predictive coding device, characterized in that: a channel information generator, the sound power quantizer, adaptive code table
linearvectorquantizercode
- data compression using linear vector quantizer
pcm
- 一。产生长度为500的零均值,单位方差的高斯随机变量序列,用均匀pcm的方法用16电平进行量化:1)求所得的SQNR,该序列的前5个值,相应的量化值和相应的码字。2)画出量化误差(定义为输入值和量化值之间的差),同时 画出量化值作为输入值的函数的图。3)用128量化电平数重做2)题, 比较结果。 二。产生一个长度为500,按N(O,1)分布的随机变量序列,分别用16,128量化电平数和u=255的u律非线性进行量化,画出每种情况下量化器的误差和输入-输出关系,并求SQNR. 三。长度为5
DSP_Lab_070
- For a file(.wave) • Find the sampling frequency and the number of bits per sample. • Re-quantize the samples using the following methods: o Linear Quantization o A-Law Companding with A=87.6 o μ-Law Companding with μ=255 •