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USB Microphone diagnostics

Test what the browser can see. Know when it cannot.

Diagnose detection, input level, mute, USB connection, permissions and app routing before treating the microphone as failed.

Run these first

Relevant live checks

Microphone TestCheck whether your browser can detect your microphone and receive live audio.
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Microphone Level TestSee a live input level meter and identify audio that is too quiet or clipping.
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Microphone Recorder TestRecord a short clip locally and play it back to verify your microphone path.
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First diagnostic sequence

Do the high-signal checks before risky changes

  1. 1

    Connect directly to a known-good USB port

  2. 2

    Check physical mute/gain controls

  3. 3

    Run the microphone test before opening the affected app

What DeviceOK/browser can help check
  • Confirm the browser receives an audio stream
  • Show input level/waveform
  • Enumerate available media inputs after permission
What this browser page cannot prove
  • Read USB electrical health
  • Repair drivers or firmware
  • Prove the capsule/preamp is electrically healthy