Microphone Test
Input level, noise floor, spectrum and sample info, plus record-and-playback so you can hear yourself.
Click Start recording and grant mic permission → speak → Stop recording → Play recording to check.
Microphone tests
Why choose My PC Tester?
Your voice stays local
Every bit of audio is processed and recorded inside your browser — it is never uploaded to any server.
Real-time waveform
Millisecond-level live feedback makes volume level and noise floor instantly visible.
Record & play back
Lossless local recording lets you actually hear how you sound to other people.
Read the low-level specs
Sample rate, channel count, latency and spectrum pulled straight from the hardware — enough for everything from factory checks to pro tuning.
How to start testing
- 01 · Grant microphone access
Click “Start microphone test”. The browser asks for permission — be sure to click “Allow”.
- 02 · Watch the level & waveform
Speak normally and watch the green waveform and level bar follow your voice; it should sit near silence when you stop.
- 03 · Record and listen back
Hit “Start recording”, talk for a bit, then stop and play back — check for hum, pops or echo.
Microphone terms explained
- Sample rate
- Samples of the sound captured every second. 44100Hz (CD quality) and 48000Hz (DVD quality) are the common standards.
- Noise floor
- The residual hiss or hum a mic still records in a perfectly quiet room. Cheap motherboard codecs and budget mics usually have a higher floor.
- Gain
- How sensitive the mic is to sound. More gain means louder audio, but it also amplifies room noise — and can clip.
- Cardioid
- A pick-up pattern that accepts sound from the front and rejects the back — ideal for streamers and game voice.
Troubleshooting
No devices listed at all
Symptom: no microphone is detected.
How to fix it:
- Check a headset mic is in the right jack — on desktops the mic port is pink, not the green headphone port.
Plugged in but no sound
Symptom: device exists but captures nothing.
How to fix it:
- Check the physical mute switch on your gaming headset cable.
- Some laptops have an F-key that disables the mic — check it.
Sounds underwater / robotic
Symptom: recordings sound hollow or mechanical.
How to fix it:
- Usually Bluetooth bandwidth dropping the mic to 8000Hz hands-free mode.
- For voice chat use a wired or 2.4G wireless headset.
Constant hiss / hum
Symptom: persistent noise on the mic.
How to fix it:
- Lower “Mic boost” (avoid more than +20dB).
- On a desktop, plug into the rear motherboard jack to avoid front-panel EMI.
Frequently asked questions
The page says “can’t access the mic” or nothing happens?
Make sure you clicked “Allow”. If you denied earlier, click the lock icon in the address bar, set mic to Allow and refresh.
My voice is so quiet it’s barely audible?
In system sound settings, pull “Microphone volume” to 100 and enable “Mic boost” if needed.
Constant buzzing / static on the mic?
Usually “Mic boost” is set too high, or the front-panel jack picks up EMI. Use the rear motherboard jack instead.
Other people hear strong echo?
The mic is re-recording your speakers. Wear a headset, or turn on system “echo cancellation”.
The browser tests fine but in-game there’s no mic?
Windows “exclusive mode” may be held by WeChat or other apps. Uncheck “allow apps to take exclusive control of this device” in mic properties.
Mic basics
Types & connection
- Sound and mic test combo: once your mic checks out, run our speaker test so both ends of a call are verified.
- Dynamic: rugged, noise-tolerant — great for live streams and street interviews.
- Condenser: more sensitive and detailed — the studio, podcast and gamer pick, but it picks up room noise and pops too.
- USB: plug-and-play with a built-in sound card · XLR: pro quality, needs an interface/mixer · 3.5mm: analog and most basic.
Core metrics
- Signal-to-noise ratio (SNR, dB): higher = cleaner recording with less hiss.
- Sensitivity: higher picks up more at the same volume — but can also amplify room noise.
- The diaphragm turns sound into signal; a preamp and an ADC (USB) bring it to your PC.
Box specs often lie — measure real noise floor, sensitivity and pickup latency with the tester here.
Diaphragm & sound quality
Diaphragm types
- Large-diaphragm condenser: rich, warm low-end and detail — the studio and high-end streamer pick.
- Small-diaphragm condenser: fast transient response and crisp high-end — good for recording instruments and live shows.
- Dynamic capsule: handles loud sources without overload — live vocals and street use.
Specs that matter
- Frequency response: wider and flatter around 20Hz–20kHz sounds more natural.
- Max SPL: how loud a source it survives before distorting — key for amps and drums.
- Self-noise: lower is better — pro mics usually stay under about 15dB.
Hardware and software noise reduction help, but can dull voice detail — verify the real result with a test.
How microphones work
Pick-up principles
- Dynamic: sound moves a coil through a magnet — rugged, needs no external power.
- Condenser: sound changes a charged gap — needs 48V phantom power, more sensitive and accurate.
- MEMS: tiny chips in phones and laptops — integrated and cheap, limited quality.
Pick-up patterns
- Omnidirectional: captures sound from every direction — meetings and room ambience.
- Cardioid: accepts the front, rejects back/sides — the streamer and podcaster favourite.
- Figure-8: captures front and back — for two-person interviews.
Using & maintaining your mic
Quick fault checks
- Cut-outs or uneven level: USB contact, worn cable or drivers.
- Higher noise: too much gain, power interference or an aging mic.
- Pops / distortion: too close, missing pop filter, or gain overload.
- Test noise floor, latency and distortion first — hardware vs settings vs habit.
Daily care
- Wipe the pop filter and shock mount regularly to keep dust and breath off the capsule.
- Keep the mic dry — condensers fear humidity; store them in a dehumidifier box.
- Check USB/XLR contacts for oxidation; clean with an alcohol wipe if needed.
- Switch off and cut phantom power when done to protect the circuit.
Microphone care
Keep one fist away
Keep your mouth about a fist-length from the mic — closer pops, farther sounds thin.
Add a pop filter
A cheap foam sleeve filters out most breath and wind noise.
Mind which side is front
A cardioid condenser only captures clearly from the side facing its logo.
Use noise suppression
In a noisy room, use RTX Voice, Krisp or an OBS suppress filter.
Buying guide
Use cases
- Voice chat / meetings: a budget USB mic or headset mic is enough.
- Streaming / podcasts: a cardioid condenser + pop filter and shock mount.
- Music / voice-over: a large-diaphragm condenser plus an interface or mixer.
- Multi-person meetings: omnidirectional or multi-pattern versatility.
Connection & diaphragm
- USB is simplest for plug-and-play; XLR is the pro long-term route.
- Warm vocals → large-diaphragm condenser.
- Precise instrument detail → small-diaphragm condenser.
- Loud, live sources → dynamic.
Verify what you buy
- Test real noise floor, sensitivity and distortion vs the spec sheet first.
- Check pickup latency and whether it clips at normal speaking volume.
- Dial in gain and distance until the recording is clean and consistent.
Brands & budget
- Pro audio: Shure, RØDE, Audio-Technica, Sennheiser.
- Value Chinese brands: Xiaomi, Philips, TAKSTAR — strong price/performance USB mics.
- Streamer favourites: Blue, HyperX, Razer — easy setup and looks.
- Budget from entry to flagship; the leap is capsule, preamp and self-noise.