在MATLAB中使用DSP Builder模块，利用DDS原理产生任意频率的正弦波-sinwave

基于DDS原理的频率信号产生,基于DDS原理的频率信号产生方法可以灵活的设定频谱分辨率且无需消耗大量的存储空间-DDS-based principle of the frequency signal generator, based on the principle of DDS frequency signal generating method can be flexibly set spectral resolution and without consuming a lot of sto