Generate precise audio tones online with this free tone generator supporting frequencies from 20 Hz to 20 kHz. Choose sine, square, sawtooth, or triangle waveforms and select stereo, left, or right channel output. Use preset frequencies or create custom tones for music tuning, speaker testing, headphone checks, room acoustics, and general audio troubleshooting directly in your browser. https://aitoolspros.com/tools/audio/tone-generator/