KlyveroMicrophone Test
Inspect input level waveform and spectrum.
Enable microphone to see real local samples. Nothing is sent to a server. There is no live speaker monitoring. Start recording separately to make a local playback clip. Stop, hide or leave this page to release capture.
Ready when you are
No audio samples yet
For a rough digital noise-floor observation, stay quiet at the same input gain before stopping. The latest dBFS reading can include room sound and browser noise suppression; it is not calibrated acoustic noise.
Microphone clips contain audio only. Use headphones for playback to avoid feedback. Recording stays in memory and is deleted when you leave or hide this page.
No recording saved
Relative levels/dBFS estimate only; noise suppression/AGC apply; channels report exposed stream not physical topology
How to use this test
- Enable capture and speak while inspecting the actual waveform, spectrum and relative level.
- Speak at a comfortable level. Observe the actual input activity.
- Stop capture before playback. Recording requires a separate explicit action and stays local.
Checks included in this tool
Microphone Recording Test
Record and replay a short local microphone sample. Playback lets you judge what was captured. Browser processing, room sound and the output device all affect what you hear.
- Enable the microphone, explicitly record a short clip, stop capture and listen locally.
- Speak at a comfortable level. Observe the actual input activity.
- Stop capture before playback. Recording requires a separate explicit action and stays local.
Playback depends on output and input paths; codec support gated; no objective microphone quality score
How it works & what results mean
How the test works
Inspect input level waveform and spectrum. It uses getUserMedia; Web Audio AnalyserNode; track settings. The workspace shows observations from this browser or asks for your own confirmation.
Understanding your result
Digital level in dBFS depends on gain and browser audio processing. It is not calibrated sound pressure or a microphone-quality grade. Relative levels/dBFS estimate only; noise suppression/AGC apply; channels report exposed stream not physical topology Missing data, blocked permission and an operation that could not run are shown separately. None establishes a hardware fault.
What you can inspect
Microphone Test
Relative levels/dBFS estimate only; noise suppression/AGC apply; channels report exposed stream not physical topology
Input Level Test
Relative levels/dBFS estimate only; noise suppression/AGC apply; channels report exposed stream not physical topology
Frequency Spectrum
Relative levels/dBFS estimate only; noise suppression/AGC apply; channels report exposed stream not physical topology
Noise Level Approximation
Relative levels/dBFS estimate only; noise suppression/AGC apply; channels report exposed stream not physical topology
Channel Information
Relative levels/dBFS estimate only; noise suppression/AGC apply; channels report exposed stream not physical topology
Keep checking
Related tests
About this test & common questions
how to test a microphone with playback online?
Start a microphone test to see received audio levels and try local recording playback. A mic test can help you check whether the browser receives your voice.
does a microphone test measure calibrated loudness?
The level meter is not a calibrated sound pressure meter; gain, processing and background noise affect the signal.