A cepstral-domain algorithm for pitch estimation from noise-corrupted speech

Authors

  • Celia Shahnaz Centre for Signal Processing and Communications, Dept. of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
  • Wei-Ping Zhu Centre for Signal Processing and Communications, Dept. of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G 1M8, Canada
  • M. Omair Ahmad Centre for Signal Processing and Communications, Dept. of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G 1M8, Canada

Keywords:

Acoustic variables measurement, Boolean functions, Clutches, Continuous speech recognition, Cosine transforms, Discrete cosine transforms, Electric fault location, Accurate, Adverse effects, Cepstral, Cepstrum, Linear predictions, Noisy speeches, Pitch estimations, Power cepstrum, Power spectral

Abstract

A study was conducted to develop an accurate algorithm for pitch estimation from noisy speech observations with an aim to significantly reduce the pitch-errors for a wide range of speakers. The study proposed to employ a Discrete Cosine Transform (DCT) based power spectral subtraction scheme for enhancing noisy speech prior to pitch estimation. The de-noised speech was inverse filtered, to yield an output, referred to as the Linear Prediction (LP) residual, to remove the adverse effect of formants. The objective of the proposed method is the introduction of a DCT power cepstrum (DPC) of the LP residual that exhibits a more prominent peak at the true pitch, relative to that demonstrated by the conventional cepstrum of noisy speech.

Published

2008-09-01

How to Cite

1.
Shahnaz C, Zhu W-P, Ahmad MO. A cepstral-domain algorithm for pitch estimation from noise-corrupted speech. Canadian Acoustics [Internet]. 2008Sep.1 [cited 2021May6];36(3):80-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2047

Issue

Section

Proceedings of the Acoustics Week in Canada