to show the waveform of audio file and play it on computer Purpose: Familiar with WAV file format and UI design It should have the following functions: Provide a Graphic User Interface for user to browse the file system and select one WAV file

基于TMS320VC5402的音频信号采集与处理系统。介绍了该系统的总体方案和硬软件设计。-TMS320VC5402-based audio signal acquisition and processing system. Introduced the overall system program and hardware and software design.

DTMF 编解码器在编码时将击键或数字信息转换成双音信号并发送,解码时在收到的DTMF 信号中检测击键或数字信息的存在性.采用ccs2.2开发。运行在DES5410APP-U开发版上。 子程序_start_ac01，完成AD 及DSP 的多通道缓冲串口（McBSP）初始化。 子程序_iir_to_dtmf，通过由函数set_freq_coff()初始化的系数，分别迭代运算产生行 频和列频，该子程序计算出的两个频率信号样本值分别放入累加器a 和b，相加之 后作为新的一个音频样本发送

C代码实现的GSM全速率语音编解码，GSM系统是一种全数字系统，话音和其它信号都要进行数字化处理，因此移动台首先要将语音信号转换成模拟电信号，以及其反变换，移动台再把这模拟电信号转换成13Kbit/s的数字信号，用于无线传输-GSM full rate speech code-decode.GSM system is a full digital system, voice and other signals to digital processing, so the mobile statio

Packet Loss Concealment (PLC) algorithms, also known as frame erasure concealment algorithms, hide transmission losses in an audio system where the input signal is encoded and packetized at a transmitter, sent over a network, and received at a