Generate pure and shaped audio tones for musical reference, instrument tuning and sound system testing. This free online tool supports frequencies from 20 Hz to 20 kHz with sine, square, sawtooth and triangle waveforms. Use the 440 Hz preset for musical reference, test individual stereo channels or run a logarithmic frequency sweep to explore speaker and room response without installi... https://aitoolspros.com/tools/audio/tone-generator/