Your sound
Library
Real-time spectrum
Analyzer
Start listeningTargets in red: 370 · 440 · 670 · 740 Hz
Peak— Hz
Note—
Level— dB
−50¢+50¢
IDLE
Target frequencies
Detection sensitivity
Detection log
1 Hz – 22 kHz
Tone Generator
Drag the ruler sideways to tune · red dots are your targets
Waveform
Mode
Left ear hears the base tone, right ear hears base + beat. Use headphones.
Phone speakers rarely reproduce below ~150 Hz or above ~18 kHz. Use headphones for low tones and start quiet.