A synthesis-based method for pitch extraction

Paliwal, K. K. ; Rao, P. V. S. (1983) A synthesis-based method for pitch extraction Speech Communication, 2 (1). pp. 37-45. ISSN 0167-6393

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/016763...

Related URL: http://dx.doi.org/10.1016/0167-6393(83)90062-6


A synthesis-based method for pitch extraction of the speech signal is proposed. The method synthesizes a number of log power spectra for different values of fundamental frequency and compares them with the log power spectrum of the input speech segment. The average magnitude (AM) difference between the two spectra is used for comparison. The value of fundamental frequency that gives the minimum AM difference between the synthesized spectrum and the input spectrum is chosen as the estimated value of fundamental frequency. The voiced/unvoiced decision is made on the basis of the value of the AM difference at the minimum. For synthesizing the log power spectrum, the speech signal is assumed to be the output of an all-pole filter. The transfer function of the all-pole filter is estimated from the input speech segment by using the autocorrelation method of linear prediction. The synthesis-based method is tried out on real speech data and the results are discussed.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Speech; Pitch Extraction; Linear Prediction
ID Code:52203
Deposited On:03 Aug 2011 06:36
Last Modified:18 May 2016 05:49

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