psych~ Pitch Synchronous Yin-based Choral Harmonizer. The object psych~ performs high quality polyphonic harmonizing and vocoding of monophonic input by PSOLA analysis/resynthesis based on the YIN algorithm by Cheveigné/Kawahara. Distribution/licence: IRCAM Forum	Format : External Environment : max / msp commercial Max 4.5 http://recherche.ircam.fr/equipes/temps-reel/maxmsp/anasynth.html