Introduction - If you have any usage issues, please Google them yourself
this procedure from Matlab realized, for the speech signal power spectral density estimation. hope to be helpful.
Packet : 121114125powerspectraldensity.rar filelist
Power Spectral Density\PSD_Matlab\PSD.m
Power Spectral Density\PSD_Matlab\FFT_core.m
Power Spectral Density\PSD_Matlab
Power Spectral Density