🎯 What are AVQI and ABI?
AVQI (Acoustic Voice Quality Index) combines 6 acoustic parameters into a single validated score for overall dysphonia severity.
- • CPPS - Smoothed Cepstral Peak Prominence
- • HNR - Harmonics-to-Noise Ratio
- • Shimmer Local - Cycle-to-cycle amplitude variation
- • Shimmer dB - Amplitude perturbation in dB
- • Slope - Spectral slope measure
- • Tilt - Long-term average spectrum tilt
ABI (Acoustic Breathiness Index) combines 9 acoustic parameters specifically designed to quantify breathiness perception.
- • CPPS, Shimmer dB, Shimmer Local
- • Jitter Local - Cycle-to-cycle period variation
- • GNE (Glottal-to-Noise Excitation ratio) max
- • HFNO - High-Frequency Noise Offset
- • HNRD - HNR Difference
- • H1-H2 - First harmonic difference
- • PSD - Power Spectral Density measure
📋 Standard AVQI/ABI Protocol
Record Speech
Patient counting numbers 1-11 at normal volume and pace
Record Vowel
3-5 seconds of sustained /a/ at comfortable pitch
Upload Both
Analysis requires both recordings for accurate calculation
Get Results
AVQI and ABI scores with clinical interpretation
Based on Englert et al. (2021) validation study for Brazilian Portuguese.
Algorithm accuracy validated against Praat reference implementation.
Upload Two Recordings
Drag & drop your audio file here, or click to browse
Supports: WAV, MP3, M4A and many more • Maximum: 50MB
Countinuous speech
Recording Guidelines:
- ✓About 30 seconds duration
- ✓Normal speaking voice
- ✓Steady, conversational pace
- ✓Quiet environment
Sustained Vowel /a/
Recording Guidelines:
- ✓3-5 seconds duration
- ✓Steady pitch and volume
- ✓Don't fade at end
- ✓One continuous breath