How it works
Online Violin Tuner
The tuner finds the nearest standard violin string and compares your detected pitch with its target frequency. A negative deviation means the string is flat; a positive deviation means it is sharp.
Use small tuning adjustments and re-check after each change. You can also tap a string card to hear a synthesized reference tone.
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For best results, use a quiet room, keep the microphone close to the sound source, and hold one clear note at a time.