Musical instrument strobe tuner; a real-time emulation.

Features:

• Configurable up to 12 wheel, 9 octave.
• 16.35 – 21,096 Hz (C0 – E10). Covers the full range of human hearing.
• Configurable pitch and wheel count.
• Many transpose (key) options.
• Automatic and manual and gain control.
• 60 FPS (with suitable computer).
• Presets for single note, major, minor, and chromatic scales.
• Adjustable 440 Hz.
• Complete command line control.
• Simulated sine waves for test and or debugging.
• Actual low level emulation, no FFT used.
• Coded in C.
• Harmonic mode.

sourceforge.net/projects/strobetuner
en.wikipedia.org/wiki/Electronic_tuner#Strobe_tuners