Dear All, Following the tradition of sndpeek, rt_lpc does LPC analysis, synthesis, and visualization in real-time. It is released as of today. features: - real-time LPC analysis - real-time LPC synthesis - visualization of original, predicted, and error waveforms - visualization of vocal tract shape from LPC coefficients - adjustable LPC analysis order - adjustable synthesis pitch shift - lots of other choices (pitch pulse source selection, emphasis filter)\\ - STFT plot - modular LPC library - MIDI input control of pitch Like sndpeek, it is great for teaching. http://soundlab.cs.princeton.edu/software/rt_lpc/ We just put this out, and while the main file is pretty cluttered, our LPC library is cleanly abstracted for use in your applications. Welcome all comments and suggestions. Best, Ge!