YSS915,数字DSP处理，ADC输入，一路直通模似输入，MUSIC，MIC效果可单独选择，有延时，变调等功能-YSS915, digital DSP processing, ADC input, all the way through analogue input, MUSIC, MIC effect can be individually selected, a delay, modulation and other functions

采样法生成三相SPWM波的开环调速控制程序载波频率为20KHz，或载波周期为50μs。DSP晶振10MHz，内部4倍频，时钟频率为40MHz，计数周期为25ns。假设调制波频率由外部输入（1～50Hz），并转换成合适的格式-Sampling method to generate three-phase SPWM wave open-loop speed control procedures for the carrier frequency 20KHz, or carrier period is

采用DDS 技术实现了基于DSP 的模拟调制实验模块。包括系统的硬件和软件设计,模拟调制原理,DSP实现模拟调制的方法,同时采用单象限正弦波形存储器结构对DDS 模块进行了改进,提高调制器的性能。-DDS technology using DSP-based implementation of the experimental module Analog modulation. Including system hardware and software design, analog modul