PhonaLab

PhonaLab is a browser-based platform for acoustic analysis of voice recordings, aimed at speech-language pathologists, voice clinicians, and researchers. It computes validated multiparametric acoustic indices — including the Acoustic Voice Quality Index (AVQI), Acoustic Breathiness Index (ABI), smoothed cepstral peak prominence (CPPS), and glottal-to-noise excitation ratio (GNE) — from sustained-vowel and connected-speech recordings, using Praat algorithms via the Parselmouth interface. Audio is processed in memory and not stored. Interface available in English, Brazilian Portuguese, and Spanish.