Author manuscript, published in "ICASSP'06, Toulouse: France (2006)" MULTI-SCALE FRAME-BASED ANALYSIS OF AUDIO SIGNALS FOR MUSICAL TRANSCRIPTION USING A DICTIONARY OF CHROMATIC WAVEFORMS

A new method for analyzing audio signals in the context of musical transcription is described. It consists of a framebased expansion of the signal over a multi-scale time-frequency dictionary with a set of logarithmic discrete frequencies. This method, based on the Matching Pursuit algorithm, provides the same frequency resolution as a constant-Q filter-bank, but with a better time resolution, especially in low frequencies, and an efficient noise rejection. 1