The method for PCM/FM signal demodulation based on DSTFT was proposed according to the instability of factual PCM/FM signal.

• 根据实际PCM/FM信号的非平稳特性,提出了基于离散短时傅里叶变换(DSTFT),通过比较频点能量进行PCM/FM信号软件化解调的实现方法。