Abstract
Multipitch estimation, also known as multiple fundamental frequency (Fo) estimation, is an important part of the Music Information Retrieval (MIR) field. The usual approach to this problem consists of two basic steps — transforming the source sound signal from time domain to a different form and using a certain method of analysis to obtain the frequencies of musical notes recognized in the signal. Our approach extends this scheme, introducing multiple different sound transforms and different analysis methods, as well as a novel method of merging individual results which leads to better outcome than single-method approach (88% for two-voiced polyphony, 83% for three-voice polyphony, 73% for four-voice polyphony).
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