AVQI Calculator (Acoustic Voice Quality Index)
The Acoustic Voice Quality Index (AVQI) is a multivariate acoustic measure that summarizes overall voice quality and dysphonia severity into a single score, combining several acoustic markers from sustained phonation and connected speech. It is widely used by speech-language pathologists and phoniatricians to objectively track voice across therapy.
Open the AVQI Calculator →What does AVQI measure?
AVQI integrates several acoustic parameters (such as cepstral and spectral measures) into one index that correlates with the perceived overall severity of dysphonia. A higher AVQI generally reflects poorer voice quality. Because it is computed the same way every time, it offers a reproducible complement to perceptual ratings like GRBAS.
How to compute AVQI with Vocametrix
Record or upload a sustained vowel and a short read passage, and the tool computes the AVQI score automatically — no Praat script to install or edit. You can export the result and add it to your case notes to document progress before and after voice therapy.
Who uses it?
Voice therapists, ENT/phoniatrics teams and researchers use AVQI for baseline assessment, outcome measurement and screening. Reference thresholds vary by language and recording protocol, so interpret the score alongside your clinical judgement.
Frequently asked questions
Is the AVQI calculator free?
Yes. You can compute AVQI online with Vocametrix without installing Praat or writing scripts.
Do I need Praat to calculate AVQI?
No. Vocametrix runs the acoustic analysis for you in the browser-based platform, so you do not need to install Praat or maintain custom scripts.
What recordings do I need for AVQI?
AVQI is typically computed from a sustained vowel combined with a short segment of connected (read) speech recorded in quiet conditions.