PEFAC - A Pitch Estimation Algorithm Robust to High Levels of Noise

  title={PEFAC - A Pitch Estimation Algorithm Robust to High Levels of Noise},
  author={Sira Gonzalez and Mike Brookes},
  journal={IEEE/ACM Transactions on Audio, Speech, and Language Processing},
  • S. GonzalezM. Brookes
  • Published 1 February 2014
  • Computer Science
  • IEEE/ACM Transactions on Audio, Speech, and Language Processing
We present PEFAC, a fundamental frequency estimation algorithm for speech that is able to identify voiced frames and estimate pitch reliably even at negative signal-to-noise ratios. The algorithm combines a normalization stage, to remove channel dependency and to attenuate strong noise components, with a harmonic summing filter applied in the log-frequency power spectral domain, the impulse response of which is chosen to sum the energy of the fundamental frequency harmonics while attenuating… 

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