Audio & Camera Tests
Test microphone activity, speaker channels and webcam preview locally in your browser with permission-based controls.
Microphone Test
Start a local microphone test with live level, waveform and device label where available.
Speaker Test
Play conservative left, right or stereo test tones with frequency and volume controls.
Webcam Test
Preview your camera locally with resolution, aspect ratio, mirror and camera switching controls.
What these audio & camera tests cover
These tools use browser media and audio APIs only after you start a test. They are designed for quick pre-call checks and troubleshooting without intentionally uploading microphone audio or webcam video.
When to use these tests
Use them before meetings, streaming, recording or support calls, or when the wrong microphone, camera or stereo channel appears to be selected.
Tips for more consistent results
Check browser and operating-system permissions first. Close other apps that may already be using the camera or microphone, then select the intended device where the browser exposes a choice.
Explore the complete diagnostic suite
Each test page links to closely related checks so you can follow a symptom across input, browser, display or network layers. You can also open the complete tool index to search all Devices Test Hub utilities.