Is your voice okay? Track it like a number on a chart.
Sustained-vowel clinical battery: F0, jitter, shimmer, HNR, CPPS, F1/F2/F3 formants, vibrato, GNE, subharmonic ratio, LTAS slope, MFCC, vowel-space plot, and cohort norms. Three depth levels — friendly normality score, longitudinal tracking, and the full clinical-grade report.
- Range
- A2 — F♯5
- On target
- 86%
- Stability
- Good
- Take
- 0:08
Numbers from Voice Analysis.
Every drill emits a stream of measurements. Take them as they come or save them to a session — every reading is timestamped and exportable.
- F0, jitter, shimmer
- HNR and CPPS
- Formants F1 / F2 / F3 (LPC)
- GNE and subharmonic ratio
- LTAS slope, MFCC
- Vowel-space plot, cohort norms
Three ways to work.
Each mode owns a clear job. You can switch between them mid-session without losing your place.
Consumer
Friendly normality score with plain-language feedback.
Track over time
Logged sessions with side-by-side comparison.
Clinical-grade
Full acoustic report against published norms.
Under Voice Analysis.
The specialised tools that share this pillar's engine.
Singer's-Formant Trainer
Live FFT energy ratio in 2.5–3.6 kHz. 0–100 ring score.
Vowel-Shape Coach
Live LPC formants every 200 ms on the vowel-space plot vs IPA target.
Diadochokinesis (pa-ta-ka)
5 s window, RMS-envelope onset detection. Syllables/sec vs norms.
Sibilance Meter
Live 4–10 kHz band ratio + spectral centroid. Calibrated thresholds.
Voice Journal
Daily 30 s sustained vowel + 1–5 feel rating + note. Tracks j/s/HNR.
Voice Handicap Index (VHI)
Self-perceived impact of voice problems on daily life.
GRBAS
Hirano 1981 perceptual self-rating: Grade · Roughness · Breathiness · Asthenia · Strain.
Reflux Symptom Index (RSI)
Belafsky 2002 9-item index for laryngopharyngeal reflux.
Vocal Fatigue Index
Composite over recent vs baseline jitter, HNR, range, load, and rest.
Companion pillars.
The four pillars cross-link in the dashboard. A range gain in Pitch Lab raises the ceiling for Volume Coach; a breath gain in Breath Trainer lifts your stability in Pitch Lab.
See your voice. Today.
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