Some other pages on our site you may enjoy:
ESECTION - Speech signal cross-sections
ESection is a free program for calculating and displaying spectral and other related analyses of sections of a speech signal. It can be used to demonstrate the different spectral properties of elements of speech. It can also calculate an LPC spectrum, autocorrelation and cepstrum analyses, and can display the signal as a waveform or as a spectrogram. It automatically finds formant and fundamental frequency values. More information.
HEARLOSS - Hearing Impairment Demonstrator
HearLoss is a free interactive Windows PC program for demonstrating to normally hearing people the effects of hearing loss. More information.