The Vocal Stability Index. A one-minute, five-vowel scan becomes one score built from harmonic clarity, jitter, spectral balance and stability — today measured against your own baseline.
Four measurements, weighted, then compared to your own history.
Reading 01 · scoreToday
82
Where you are today
82
+4 on last week
baseline 78
One number, 0 to 100, from a one-minute, five-vowel scan. It is scored against your baseline, not a population average, so it means something for your voice.
Good looks like: steady or rising. A five-point drop two days running is worth a rest day.
Reading 02 · componentsPer scan
4
Which part moved
Clarity
88
Jitter
79
Spectral
61
Stability
83
Harmonic clarity, jitter, spectral balance and stability each get their own bar, so a dip tells you what changed rather than just that something did.
Good looks like: clarity and jitter high. Spectral is the one that moves with a cold.
Reading 03 · trendRolling
14 d
Which direction you are going
A fortnight of scores as a line. Single days are noisy — sleep, allergies, yesterday's gig. The slope is the honest signal.
Good looks like: a line that recovers within two days of every heavy session.
Three steps
How it works
Analysis runs on your device. We store the numbers, never the audio.
01Step 01
Sing five vowels, about a minute
Comfortable pitch, comfortable volume. The score comes from your 8-second ‘ah’; the other four vowels map your range. Run the Acoustics Scanner first if the room is new.
02Step 02
Four measurements are taken
Clarity, jitter, spectral balance and stability, all from the same sample.
03Step 03
It is scored against your baseline
Your first scan sets the reference. Every score after that is a comparison to you, not to anyone else.