TRICHORD

Truth about your unisons.

Mic off

Selected-note mode compares the live pitch against the target you choose. This is the Free MVP tuner workflow.

Free tier: selected-note target is active; Auto-detect remains a labeled Amateur preview in this playground.
Active target Selected note · Free
Selected note · A4 · 440.00 Hz Auto-detect is off; cents are measured against the note below.

Mic is off. Start mic, then play or hum a steady note.

Detected note — — Hz
Cents from target — No signal Waiting for sustained tone
Confidence
—
Level: — Pitch lock: waiting Claim: hidden
Hidden Orientation Beat-only Split eligible
Technician call No stable pitch Play a steady note; Trichord will report stable, within target, low confidence, or re-strike.
Target claim Waiting for pitch
Unison split Hidden until stable
Next action Strike cleanly
Stable ≥88% Usable 68–87% Low 45–67% Re-strike <45%
Confidence recipe
  1. Level must be present without clipping.
  2. Pitch lock must settle on one frequency.
  3. Claim upgrades from hidden → orientation → technician-grade.
Unison / Views Pick the visual aid before trusting the claim.

Dial, Graph, Wave, and Strobe stay layout-visible; Unison split language waits for a stable Pro-grade signal.

Selected view Dial · Free
Free Always visible

Large cents movement for the selected-note tuner.

Use for
Fast left/right target correction.
Do not use for
Unison split claims.
Gate
Selected-note cents; confidence still shown.
Note — — Hz
Cents — No signal
View gate Dial is always visible No confidence claim is needed to read the selected-note dial.
No-mic preview Start mic to earn confidence language Until Trichord sees level and pitch lock, this view is layout only—not a tuning or split claim.
Re-strike Low Usable Stable
Full tuning sweep
-50
0
+50
Needle is centered until mic evidence arrives; no tuning claim yet.

Manual tuner style: cents left/right from the active target.

Note—
Drift—¢
DirectionNo signal
Motionstopped
Pattern waits for usable pitch lock; when active, stripe motion shows cents drift from the target.

Strobe drift: near-still means near target. Faster motion means farther from the selected note.

Note—
Y-axisCents ±60¢
Now—¢
WindowLast 160 frames
Graph waits for settled pitch history; empty canvas is not a tuning claim.

Pitch history over time: up = sharp, center = in tune, down = flat.

Note—
WaveformMic amplitude
Level— dBFS
Pitch lock— Hz
Wave shows level/noise evidence only; pitch lock is listed above when available.

Raw mic waveform: taller wave = louder signal. It helps diagnose level/noise before trusting pitch.

Unison workbench

Pro playground: estimated split and beat views will only show when confidence supports it. Otherwise: beat-only, re-strike, or signal too noisy.

No split shown without stable pitch evidence.
Beat helperlistening…
Feature tier simulator

Free is a useful selected-note tuner: fixed A440, manual target, no fake auto-note or unison split claims.

Watch the settled portion of the note. Trichord informs your ear; it does not replace it.
Synthetic C++ probe lab 
Waiting…