Browse > Article
http://dx.doi.org/10.5370/KIEE.2011.60.12.2374

Estimation of Fundamental Frequency Using an Instantaneous Frequency Based on the Symmetric Higher Order Differential Energy Operator  

Iem, Byeong-Gwan (강릉원주대 전자공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.12, 2011 , pp. 2374-2379 More about this Journal
Abstract
The fundamental frequency of the voiced speech is estimated using the instantaneous frequency based on the symmetric higher order differential energy operator. The instantaneous frequency based on the symmetric higher order energy operator shows better frequency estimation result since it is aligned to the time instance of the signal. The speech is pre-processed by a lowpass filter to remove higher frequency components. Then, it is processed by the instantaneous frequency to obtain the fundamental frequency estimates. The symmetric higher order energy operator has been used as an indicator to determine the voiced/unvoiced speech. The fundamental frequency estimates are further processed by a moving average filter to obtain the monotonically changed estimates. The obtained fundamental frequency estimates have been compared with the spectrogram of the speech to confirm its accuracy.
Keywords
Fundamental frequency; Instantaneous frequency; Pitch estimation;
Citations & Related Records

Times Cited By SCOPUS : 2
연도 인용수 순위
  • Reference
1 P. Maragos, J. F. Kaiser, and T. F. Quatieri, "On amplitude and frequency demodulation using energy operators," IEEE Trans. Signal Processing, vol. 41, pp. 1532-1550, Apr. 1993.   DOI   ScienceOn
2 P. Maragos, and A. Potamianos, "Higher order differential energy operators," IEEE Signal Processing Letters, vol. 2, pp. 152-154, Aug. 1995.   DOI   ScienceOn
3 B. Iem, "An Instantaneous frequency estimators based on the symmetric higher order differential energy operator," IEICE Trans. Fundamentals, vol.E93-A, no. 1, pp. 227-232, Jan. 2010.   DOI   ScienceOn
4 D. G. Childers, Speech Processing and Synthesis Toolboxes, Wiley, September. 1999.
5 L.R. Rabiner and R. W. Schafer, Digital Processing of Speech Signals, Englewood Cliffs, NJ: Prentice Hall, 1978.
6 L. Qiu, H. Yang, S. Koh, "Fundamental frequency determination based on instantaneous frequency estimation", Signal Processing, vol. 44, pp.233-241, 1995.   DOI   ScienceOn
7 F. Hlawatsch and G. F. Boudreaux-Bartels, "Linear and quadratic time-frequency signal representations," IEEE Signal Processing Magazine, vol. 19, pp. 21-67, Apr. 1992.
8 B. Boashash, "Estimating and interpreting the instantaneous frequency of a signal-Part 2: algorithms and applications," Proc. of the IEEE , vol. 80, pp. 540-568, Apr. 1992.   DOI   ScienceOn