Measuring pitch and formant frequencies for a speech understanding system

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

Research output: Contribution to journalConference article


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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