Sourdaw
SOURDAW

Absolute Pitch Reference

Scoring

Polyphonic strobe tuner and scoring tools for precise pitch visualization. The ultimate reference for absolute tuning.

Classic

Needle Analysis

Rapid pitch analysis with a clear, high-resolution arc. Perfect for quick intonation checks and stable instrument setups.

The beautiful sweeping arc relies on our proprietary signal smoothing to display absolute pitch deviations with clinical accuracy.

Scoring
Needle
Strobe
Poly
A4=
440Hz
Cents
Precision

Strobe Precision

High-accuracy strobe bands for clinical pitch measurement. Detect micro-cent deviations with real-time phase-locked visualization.

Instead of calculating a numerical average, the strobe bars drift left or right instantly based on micro-cent mathematical phase differences, providing the ultimate reference for absolute pitch.

Scoring
Needle
Strobe
Poly
A4=
440Hz
F#8
-11.7Cents5880.0 Hz
Performance

Polyphonic Tracking

The professional standard for studio-ready tuning. Strum your entire instrument and see the relative drift of every string simultaneously.

Perform a single strum and watch the relative drift of your entire frequency set mapped against perfect algorithmic centers. Ensure every note is in its place before hitting record.

Scoring
Needle
Strobe
Poly
A4=
440Hz
E2
-4.2
A2
-1.0
D3
0.0
G3
+0.6
B3
+3.1
E4
+5.5