I built maketonesonline.com — a simple browser-based tone generator to experiment with the Web Audio API.<p>What it does:<p>Generates tones from 20 Hz to 20,000 Hz<p>Supports sine, square, triangle, and sawtooth waveforms<p>Lets you adjust frequency, volume, and left/right stereo pan<p>Includes multi-tone, binaural beat, subwoofer/bass frequency, and sweep tone modes<p>It’s useful for testing speakers, hearing tests, exploring sound design, or just seeing how high a pitch you can still hear.<p>Check it out: <a href="https://maketonesonline.com" rel="nofollow">https://maketonesonline.com</a><p>I’d love your thoughts, bug reports, or ideas for improvement!