Measuring pitch and formant frequencies for a speech understanding system

D. W. Tufts, S. E. Levinson, R. Rao

Research output: Contribution to journalConference articlepeer-review


We present new techniques for the measurement of pitch period and formant frequencies. Individual pitch periods are estimated by finding local maxima in the power spectrum averaged over a frequency band that includes a formant. A spectral analysis is then performed for each pitch period over a data interval that is of shorter duration than the estimated pitch period. The pitch synchronous spectral analysis followed by post detection smoothing - preferably carried out over both time and frequency - leads to a spectrogram from which formant trajectories can be estimated by simple algorithms.

Original languageEnglish (US)
Article number1169986
Pages (from-to)314-317
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - Jan 1 1976
Externally publishedYes
Event1976 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1976 - Philadelphia, United States
Duration: Apr 12 1976Apr 14 1976

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering


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