Checking sound, microphone and camera
Prepare for the call: check the microphone, noise, stereo channels and camera image.
Microphone noise test
Compare a few seconds of silence with normal speech. Inspect digital background levels, speech levels and signs of clipping.
Microphone test
Check your selected microphone, signal level and a voice recording. The recording stays in this tab and plays only when you choose to listen.
Left and right headphone test
Check stereo channels, balance and speakers. Test sounds are generated locally in your browser.
Online tone generator
Play a quiet test tone at a chosen frequency. Compare how your headphones reproduce different tones.
Webcam test
View the selected camera, the stream resolution and an estimated frame rate. Save a snapshot locally if you want to.
Audio video sync test
Compare a short sound with a flash. Adjust the perceived offset for headphones, speakers or a TV and save your chosen setting.
Audio mono compatibility test
Check an audio file for opposing channel polarity, an empty channel and cancellation when summed to mono. Listen and download a report without uploading your file.
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Try "mouse", "microphone" or select another section.