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Tune guitar and bass: allow the microphone and play a string. Audio stays on the device.

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— Hz

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No tone yet — start the mic and pluck a string.

Tip: pin a string, pluck once and hold. Needle ±30 cents; “In tune” from about 2½ cents. A4 = 440 Hz.

Pitch: YIN (de Cheveigné & Kawahara, J. Acoust. Soc. Am. 2002). Mic audio is not uploaded.

Get the Android app Read and confirm the notice, then download the APK — no sign-in required. Only from kudulu.de — do not redistribute.