A/D和D/A转换器模型 对串行和并行输出的8位A/D和D/A转换器进行仿真，转换值范围为0到255，转换采样率为1次/秒。 -A/D and D/A converter model, serial and parallel output of the 8-bit A/D and D/A converter to simulate the conversion values range from 0 to 255, change the sampling rate of 1 times/sec.

本程序实现向两个数之间平均插入n个数， 做音视频转换采样率的朋友用得到-The program to an average insert between the two numbers n number of friends to do the sampling rate of audio and video converter with a get

对语音信号进行采样率的转换，如整数倍的内插和抽取，还可以进行非整数倍的采样率转换。-The sampling rate of the voice signal conversion, such as interpolation and decimation integer multiple of, can also be a non-integer multiple of the sampling rate conversion.

pcm编码们以话音信号为例来说明数字通信的基本原理。人类的语音信号的频率范围在300—3 400 Hz之间，留有一定余地，设话音信号最高频率为4 kHz，则根据奈奎斯特采样定理，将话音信号数字化所需要的采样频率为8 kHz，即采样周期为l25 US 0再把每个采样值用8位二进制数字编码，就把模拟话音信号转换成了数字信号。因此，一路话音信号转换成数字信号以后，比特率为8 x8 000 b／s：64 kb／s。将模拟信号用脉冲信号进行采样使其离散化并进行数字编码的过程称为脉冲编码调制，简称PCM，这

多采样率系统中的采样率转换和数字滤波器组的matlab程序(Multi-sample rate system sampling rate conversion and digital filter matlab program)