Some other pages on our site you may enjoy:
RTPITCH - Real-time Pitch Track Display
RTPITCH is a free program for displaying a real-time fundamental frequency track for a speech signal on Windows computers. More information.
RTSPECT - Real-time Waveform and Spectrum Display
RTSPECT is a free program for displaying a real-time waveform and spectrum display of an audio signal on Windows computers. More information.