Pick a voice type. Tap a note. Hear the sound and see exactly what's happening inside the body — mapped in Vocal Resonance Notation.
Choose from 7 voice types to see their full range organized by gear (register).
Hear a synthesized vocal tone at that pitch with harmonics shaped to match the register.
The notation shows resonance zones, intensity levels, and which muscles engage.
Resonance zones light up on the body diagram — brighter means more intensity.
The Voice Lab is the one tool here that needs no microphone — it is for listening and seeing. Pick one of seven voice types (Bass, Baritone, Tenor, Countertenor, Alto, Mezzo-Soprano, or Soprano), tap any note in that voice's range, and hear a synthesized vocal tone with harmonics shaped to match the register — while the Resonance Map lights up to show exactly which body zones are resonating and at what intensity.
The map displays all six VRN zones — Head [H], Nasal/Mask [N], Oral [O], Pharynx [P], Chest [C], and Low Body [L] — and brightens each one according to how strongly it contributes at the note you tapped. Tap a low note in the Bass voice and watch chest [C] and low body [L] dominate. Tap a high note in the Soprano voice and the energy shifts up into head [H] and mask [N]. Crossing a passaggio zone, the map shows the handoff between registers in real time. This is the abstract idea of “resonance moves as you ascend” made concrete and visible.
Pick a single voice type and walk up its full range one note at a time, watching the map redistribute at each step. You will see where that voice's gear shifts fall — the points where the resonance balance tips from one zone to the next. Then switch voice types and compare: a tenor and a soprano negotiate their passaggi at different pitches and with different resonance strategies, and the Lab lets you observe both without singing a note.
A static textbook diagram shows one fixed “head voice” position. The Voice Lab shows resonance as the continuously shifting, blended thing it actually is. For learners, hearing the tone and seeing the notation update together builds the mental model far faster than reading about it — and it costs your voice nothing, so you can study for as long as you like.