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MPT & DSI Calculator

Maximum Phonation Time and Dysphonia Severity Index

Measures

MPT (Maximum Phonation Time): measures the duration of sustained vowel phonation. Reflects respiratory support and vocal fold efficiency.

DSI (Dysphonia Severity Index): combines 4 acoustic parameters into a single validated score for overall dysphonia severity.

  • • MPT - Maximum Phonation Time
  • • F0-High - Maximum fundamental frequency (from pitch glide)
  • • I-Low - Minimum sustained intensity
  • • Jitter Local - Cycle-to-cycle period variation

📋 Recording Protocol

1

Sustained /a/

Hold "ahhh" at comfortable pitch as long as possible

2

Pitch Glide

Glide from lowest to highest pitch on "ahhh"

3

Upload Both

Analysis requires both recordings

4

Get Results

MPT and DSI scores with reference context

Subir Dos Grabaciones

1
🎤

Vocal /a/ Sostenida

Arrastra y suelta tus archivos de audio aquí o haz clic para explorar

Soporta: WAV, MP3, M4A y muchos más • Máximo: 25MB

2
📈

Glissando de Tono (Bajo a Alto)

Arrastra y suelta tus archivos de audio aquí o haz clic para explorar

Soporta: WAV, MP3, M4A y muchos más • Máximo: 25MB