Microphone Test
Quick browser microphone check
The Microphone Test uses your browser's Web Audio API to activate your microphone and display a live audio waveform. It confirms your microphone is connected, picking up sound correctly, and not muted — without needing to install any software.
How to Use
- 1Click "Start Test" and allow microphone access when the browser prompts
- 2Speak or make a sound near your microphone
- 3A waveform should appear moving with your voice
- 4If the waveform does not move, your microphone is not picking up audio
Reading the Waveform Like an Audio Engineer
The waveform tells you more than "working or broken" if you know what to look at. Speak at normal volume and watch the peaks: they should fill a healthy portion of the display without slamming into the top and bottom edges. Peaks that flatten against the edges mean clipping, your gain is too high, and your voice will sound crunchy and distorted to everyone on the call.
Now stop talking and watch the silence. A good setup falls to a near-flat line. A constant fuzzy ribbon of activity is your noise floor: fan hum, electrical interference, or a cheap capsule self-noising. If the quiet parts of your stream or call sound like a hiss, this is where it comes from.
What to Expect From Each Mic Type
| Mic Type | Expected Result |
|---|---|
| Built-in laptop mic | Works, visible noise floor, picks up keyboard |
| Headset boom mic | Clean voice peaks, low room noise |
| USB condenser | Tall detailed peaks, captures the whole room |
| Bluetooth headset | Works with slight visible delay in the waveform |
| Webcam mic | Functional but quiet, distant-sounding |
If the line stays flat on every mic you try, the block is almost always a browser or OS permission, not five broken microphones.
What is a Good Score?
A healthy microphone shows clear waveform movement when you speak and near-silence when you stop. A flat line when speaking indicates no signal — check your mute button, cable, or system audio settings.
Tips to Improve
- →If your mic is not detected, check that no other app (like a video call) has exclusive access to it
- →On Windows, check Settings > Privacy > Microphone to ensure browser access is permitted
- →Use this test before online calls to verify your mic is working before joining
Frequently Asked Questions
Why does my microphone not work in the browser?
Common causes: browser microphone permission denied, microphone muted in OS settings, another app has exclusive device access, or a loose cable connection. Check each in order.
What microphone settings should I check if the test fails?
Check these in order: (1) Browser permission — click the lock icon in the address bar and ensure microphone is allowed. (2) OS privacy settings — Windows: Settings > Privacy > Microphone; macOS: System Settings > Privacy > Microphone. (3) Default device — ensure your intended mic is set as the default in sound settings. (4) Mute button — many USB and headset mics have a physical mute switch.
Can I use this microphone test for any type of microphone?
Yes — USB microphones, 3.5mm microphones, headset mics, webcam mics, and built-in laptop microphones all work. The test uses the browser Web Audio API which supports any input device the OS recognizes. Bluetooth microphones may introduce latency visible in the waveform display.
What is a healthy microphone waveform?
A healthy microphone shows sharp waveform peaks when you speak and returns close to a flat line during silence. Constant low-level noise in silence may indicate interference or a cheap capsule. Clipping (flat tops on peaks) means input gain is too high.
Thirty seconds before your next call beats finding out mid-meeting. Hit start and say something.
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Built and maintained by Abdul Shakoor. Every test runs locally in your browser, free with no signup.