Method of estimating the pitch of a speech signal using an...

Details Method of estimating the pitch of a speech signal using an... Method of estimating the pitch of a speech signal using an...

2005-03-08

2005-03-08

Dorvil, Richemond (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S208000, C704S219000

Reexamination Certificate

active

06865529

ABSTRACT:
A method of estimating the pitch of a speech signal comprises the steps of dividing the speech signal into segments, calculating for each segment a conformity function, and detecting peaks in the conformity function. The method further comprises the steps of estimating an average distance between said peaks, and using the estimated average distance as an estimate of the pitch. In this way a method less complex than prior art methods, and thus suitable for small digital signal processors, is provided. The method also avoids the pitch halving situation. When the method is based on the fact that the identified peaks in the conformity function show a periodic behavior and that the true pitch period actually corresponds to the distance between the peaks, a simpler algorithm is achieved which provides the true pitch period independent on the occurrence of pitch halving, pitch doubling, etc. A similar device is also provided.

REFERENCES:
patent: 4015088 (1977-03-01), Dubnowski et al.
patent: 4081605 (1978-03-01), Kitawaki et al.
patent: 4783807 (1988-11-01), Marley
patent: 5121428 (1992-06-01), Uchiyama et al.
patent: 5784532 (1998-07-01), McDonough et al.
patent: 5970441 (1999-10-01), Mekuria
patent: 6047254 (2000-04-01), Ireton et al.
patent: 6377915 (2002-04-01), Sasaki
patent: 6418407 (2002-07-01), Huang et al.
patent: 20010021906 (2001-09-01), Chihara
patent: 0 538 877 (1993-04-01), None
patent: 0 712 116 (1996-05-01), None
Rabiner et al. “Digital Processing of Speech Signals,” 1978, Prentice-Hall, pp. 446-450.*
Rabiner et al., Digital Processing of Speech Signals, 1978, pp. 141 and 144.*
Ali Alkulaibi et al.; Fast 3-Level Binary Higher Order Statistics for Simultaneous Voiced/Unvoiced and Pitch Detection of a Speech Signal; Signal Processing; Elsvier; pp. 133-140, Dec. 1997.
Cecilia Brandel et al.; Speech Enhancement by Speech Rate Conversion; Department of Telecommunication and Signal Processing; pp. 34-57, Dec. 1999.
Linear Prediction Analysis; Tony Robinson; Speech Vision Robotics Group; 1 Page, Feb. 1998.
Quick Overview of Linear Predictive Coding (LPC) Analysis; 1 Page, Jan. 2000.
5.3 Linear Prediction Analysis; 3 Pages, May 24, 2000.
PLP-Perceptual Linear Predictive Analysis; 4 Pages, Oct. 6, 1998.
Linear Prediction; 2 Pages, Feb. 24, 1999.
Brandel, C. et al. “Speech Enhancement by Speech Rate Conversion,” Department of Telecommunication and Signal Processing, , University of Karlskrona/Ronneby, Aug. 1999, pp. 35-40 and 55-57, paragraph 2.
Form ISA/210 PCT International Search Report as prepared on Jun. 13, 2001 for PCT/EP 01/03495 (4 pgs).
Quélavoine, R., European Search Report, Application No. EP 00 61 0035, Sep. 5, 2000, pp. 1-3.
Chilton, E. et al., “The Spectral Autocorrelation Applied to the Linear Prediction Residual of Speech for Robust Pitch Detection,” ICASSP 88: 1988 International Conference on Acoustics, Speech, and Signal Processing, Apr. 11-14, 1988, New York, NY, IEEE, USA, pp. 358-361, vol. 1.
Chilton, E. et al., “Performance Comparison of Five Pitch Determination Algorithms on the Linear Prediction Residual of Speech,” European Conference on Speech Technology, GB, Edinburgh, CEP Consultants, vol. CONF. 1, Sep. 1, 1987, pp. 403-406.
Krubsack, D. et al., “An Autocorrelation Pitch Detector and Voicing Decision with Confidence Measures Developed for Noise-Corrupted Speech,” IEEE Transactions on Signal Processing, vol. 39, No. 2, Feb. 1991.

Affiliated with

Also associated with

Rating

Method of estimating the pitch of a speech signal using an... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of estimating the pitch of a speech signal using an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of estimating the pitch of a speech signal using an... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3453204