The relationship between cepstral peak prominence and selected parameters of dysphonia

Yolanda D. Heman-Ackah, Deirdre D. Michael, George S. Goding

Research output: Contribution to journalArticlepeer-review

181 Scopus citations


Traditional measures of dysphonia vary in their reliability and in their correlations with perceptions of grade. Measurements of cepstral peak prominence (CPP) have been shown to correlate well with perceptions of breathiness. Because it is a measure of periodicity, CPP should also predict roughness. The ability of CPP and other acoustic measures to predict overall dysphonia and the subcategories of breathiness and roughness in pathological voice samples is explored. Preoperative and postoperative speech samples from 19 patients with unilateral recurrent laryngeal nerve paralysis who underwent operative intervention were analyzed by trained listeners and by measures of smoothed CPP (CPPS), noise-to-harmonic ratio (NHR), amplitude perturbation quotient (APQ), relative average perturbation (RAP), and smoothed pitch perturbation quotient (sPPQ). The data were analyzed with bivariate Pearson correlation statistics. Grade of dysphonia and breathiness ratings correlated better with measurements of CPPS than with the other measures. CPPS from samples of connected speech (CPPS-s) best predicted overall dysphonia. None of the measures were useful in predicting roughness.

Original languageEnglish (US)
Pages (from-to)20-27
Number of pages8
JournalJournal of Voice
Issue number1
StatePublished - 2002
Externally publishedYes


  • Acoustic analysis
  • Breathiness
  • CPPS-/c/
  • CPPS-s
  • Cepstral peak prominence
  • Dysphonia
  • Roughness

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Speech and Hearing
  • LPN and LVN


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