A robust algorithm for forming note complexes

We describe a new algorithm to transcribe musical note complexes from polyphonic piano music. Our method is a spectrogram based algorithm, which uses a robust peak detection scheme and forms note complexes by multiple sample conditional probability in the context of a time-frequency based finite state space approach, where note onsets are determined implicitly by changes in subharmonics. This paper provides a brief summary of some of the key algorithms in our method.