LansPilot / Free tools
Tone generator
Generate a clean test tone at any frequency — for testing speakers and headphones, tuning by ear, or audio checks. Sine, square, saw and triangle waveforms.
Any frequency4 waveformsOn-deviceNo sign-up
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Part of a music suite
Built for audio people.
LansPilot captures synced pro audio and video, with subtitles and editor hand-off. Free during public beta.