Show HN: Tone Generator

A free, browser-based tone generator that plays frequencies from 1 Hz to 20,000 Hz without requiring any downloads or installation. Users can select specific pitches, choose from different waveforms (sine, square, sawtooth, triangle), adjust volume and stereo balance, and share tones via shareable links. The tool has practical applications including testing speakers and headphones, checking hearing range, tuning instruments, and teaching sound concepts.