The Tone Generator plays a pure audio tone at whatever frequency you choose — from deep 20Hz sub-bass up to 20,000Hz. Pick your frequency, choose a waveform (sine, square, sawtooth, or triangle), set the volume, and click Play. Useful for checking whether a speaker can actually reproduce a specific frequency before you trust it for anything important.
This tool is part of our online microphone test suite. Pair it with a hearing test online to check your audible range, or run a headphone test to verify your headphones can reproduce the frequencies you generate.
Start with low volume. High frequencies at high volume can cause hearing damage. If testing bass frequencies, be careful with speaker/subwoofer limits.
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