Cepstral Peak
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A measurement in decibels obtained by advanced analysis of the spectrum of a vowel. It indicates how much periodicity is in the analyzed sound, with a higher “cepstral peak prominence” (CPP) indicating a more periodic signal and a healthier voice, while a lower CPP indicates a less periodic signal and possible pathology. CPP measurements as an indication of vocal health are a good index of overall change in voice quality, particularly for voices exhibiting harmonic structure.[1]
- ↑ "NATS July 2022 Pedagogy Workshop Working Group Three Science-Informed Terminology and Definitions for Voice Pedagogy" (PDF). Science-Informed Voice Pedagogy Resources. Retrieved January 20, 2025.