Pitch tracking library, based on dywapitchtrack.
PitchTrack.Track module for an easy, "ready to use" interface,
PitchTrack.Pipes for Pipes-based components, if you need more flexibility.
Note that because all parameters are hard-coded into the C library, you are limited to the following audio configuration:
raw (headerless) format
a sampling rate of 44100Hz,
a sample size of
one channel (mono)