Generate precise audio tones online with a free tone generator designed for frequency testing, music tuning, speaker and headphone checks, room acoustics, and hearing self-checks. Choose frequencies from 20 Hz to 20 kHz, select sine, square, sawtooth, or triangle waveforms, adjust volume, switch between stereo or individual channels, and use the 15-second frequency sweep for practical... https://aitoolspros.com/tools/audio/tone-generator/