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Sensitivity - Smaller is less forgiving to out of tune notes (2 to 40):

Accidentals: sharps flats

Clef: treble alto    Transpose octave: Don't transpose (violin, flute) Up 1 octave (viola, guitar) Up 2 octaves Down 1 octave (whistling) Down 2 octaves

Red = out of tune sharp.   Blue = out of tune flat.   G#3 210.45, cents: 23

Tweak the performance:

Steady factor - Bigger is maybe more accurate at pitch detection but slower to respond.
The app takes the most frequently occuring pitch from the last N samples (3 to 60):

fftSize - Bigger is more accurate but slower to respond. Fast Fourier Transform window size: 2048 4096 8192 16384 32768

by Corey Trager - https://github.com/ctrager/pitch_detector