Effects of sampling rate and type of anti-aliasing filter on linear-predictive estimates of formant frequencies in men, women, and children

Paul H. Milenkovic, Madison Wagner, Raymond D. Kent, Brad H. Story, Houri K. Vorperian

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The purpose of this study was to assess the effect of downsampling the acoustic signal on the accuracy of linear-predictive (LPC) formant estimation. Based on speech produced by men, women, and children, the first four formant frequencies were estimated at sampling rates of 48, 16, and 10 kHz using different anti-alias filtering. With proper selection of number of LPC coefficients, anti-alias filter and between-frame averaging, results suggest that accuracy is not improved by rates substantially below 48 kHz. Any downsampling should not go below 16 kHz with a filter cut-off centered at 8 kHz.

Original languageEnglish (US)
Pages (from-to)EL221-EL227
JournalJournal of the Acoustical Society of America
Volume147
Issue number3
DOIs
StatePublished - Mar 1 2020

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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