Pitch estimation for musical sound including percussion sound using comb filters and autocorrelation function

  • Authors:

  • Yoshiaki Tadokoro;Tsutomu Saito;Yusuke Suga;Masanori Natsui

  • Affiliations:

  • Dept. of Inf. and Computer Sciences, Toyohashi University of Technology, Tempaku, Hibarigaoka, Toyohashi, Japan;Dept. of Inf. and Computer Sciences, Toyohashi University of Technology, Tempaku, Hibarigaoka, Toyohashi, Japan;Dept. of Electrical and Electronic Engineering, Toyota National College of Technology, Eisei-cho, Toyota, Japan;Dept. of Electrical and Electronic Engineering, Toyota National College of Technology, Eisei-cho, Toyota, Japan

  • Venue:
  • AMTA'07 Proceedings of the 8th WSEAS international conference on Acoustics & music: theory & applications
  • Year:
  • 2007

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Abstract

This paper proposes a new pitch estimation method using comb filters H(z) = 1-z-N and autocorrelation functions (ACFs) for the musical sounds including a percussion sound. We can obtain the ACF of the percussion sound at the comb filter output where the instrument sound with pitch is eliminated. By subtracting this percussion ACF from the ACF of the adjacent comb filter output in the twelve comb filters connected in parallel corresponding to each pitch of one octave, we can also obtain the ACF of the instrument one, and then we can estimate the pitch of the instrument sound from the instrument ACF.