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How we handle your dataMicrophone, camera and sound
Tone Generator
Play a pure tone or sweep at any frequency, with sine, square, triangle and sawtooth waves.
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More in Microphone, camera and sound
Microphone TestCheck that your microphone works, see the input level and record a short sample that stays in your browser.Webcam TestCheck that your camera works and see its resolution and frame rate. The video stays in your browser.Speaker TestPlay test tones on the left and right channels and check your speakers or headphones.Headphone Test — left, right and stereoCheck left and right channels, stereo balance, phase and frequency range of your headphones.Voice RecorderRecord your voice in the browser, play it back and save the file. The recording stays on your device.Decibel Meter — relative sound levelSee how loud your surroundings are through your microphone. Uncalibrated: levels are relative, not certified dB SPL.Online MirrorUse your camera as a mirror, with zoom, brightness and a full-screen view. The video stays on your device.