Microphone Tester

Click 'Start' and allow microphone access when your browser asks. The tester will immediately show a real-time waveform, volume meter, and frequency spectrum of your microphone input. Speak or make sounds to verify it's working correctly.

Check these common issues: 1) Browser permission — click the lock icon in the address bar and ensure microphone access is allowed. 2) Correct input device — check your OS sound settings to verify the right mic is selected. 3) Physical connection — ensure your mic is properly plugged in or Bluetooth-paired.

No. All audio processing happens entirely in your browser using the Web Audio API. No audio data is recorded, stored, or transmitted to any server. The test is 100% client-side and works even offline after the page loads.

The waveform shows the raw audio signal from your microphone in real time. The height of the wave corresponds to volume (amplitude). A flat line means no sound is detected. Consistent, clean waves indicate good audio quality, while erratic patterns may suggest noise or interference.

The volume meter shows your microphone's input level as a percentage and visual bar. For clear audio, aim for levels between 50-80% during normal speech. If levels are too low, increase your mic gain in OS settings. If they're clipping (100%), reduce the gain.

Yes, headset microphones (USB, 3.5mm, and Bluetooth) all work with the tester. Make sure your headset mic is selected as the default input device in your operating system's sound settings before starting the test.

The frequency spectrum (FFT visualization) shows which frequencies your microphone is picking up. Human speech typically falls between 85-255 Hz (fundamental) with harmonics up to 8 kHz. This helps identify if your mic has frequency response issues or is picking up unwanted noise at specific frequencies.

Yes. Click 'Record' to capture audio, then 'Play' to listen back through your speakers or headphones. This is the most reliable way to judge your mic's actual sound quality — you'll hear room echo, background noise, and frequency response characteristics. The recording stays entirely in your browser and is never uploaded or stored on any server.

Common causes: 1) Bluetooth codec — when a Bluetooth headset mic is active, audio quality drops to the HFP/SCO profile (8 kHz, mono). This is a Bluetooth protocol limitation. 2) Sample rate mismatch between your mic and OS settings. 3) CPU overload — close unnecessary tabs and apps, as audio processing is real-time and sensitive to CPU contention. 4) Buffer underrun — increase audio buffer size if your DAW or audio settings allow it.

1) Move closer to the mic — 4–8 inches for condenser mics, 1–3 inches for dynamic mics. 2) Reduce mic gain and compensate with proximity. 3) Use a cardioid polar pattern mic that rejects sound from the sides and rear. 4) Add acoustic treatment (foam panels, blankets) to reduce room reflections. 5) Enable noise suppression in your OS or communication app (Zoom, Discord, etc.).

Condenser mics (Blue Yeti, AT2020, Rode NT1) are more sensitive and capture more detail — ideal for quiet environments and vocal recording. They pick up more background noise. Dynamic mics (Shure SM7B, SM58, Rode PodMic) are less sensitive and reject background noise better — ideal for noisy environments, streaming, and podcasting. Both types work with this tester.

Yes. Webcam microphones (Logitech C920, C270, Razer Kiyo, etc.) appear as audio input devices in your OS. They're typically omnidirectional condensers with limited frequency response. The tester helps you determine if the webcam mic is adequate for video calls or if you should invest in a dedicated microphone.

Yes. It is free with no downloads and no display ads. Audio processing happens locally using the Web Audio API, and no audio is recorded, transmitted, or stored on any server. Affiliate recommendation events, when present, never include audio data.