Acoustic Frequency Audit • -∞ dB
Sound is a very important part of our digital life. Whether you are singing a song, recording a podcast, or just talking to your family on a video call, you want your voice to sound clear and natural. But sometimes, a microphone can have problems that make you sound like a robot or like you are underwater. At Hardware Tester, our Mic Lab is here to help you hear exactly what your computer hears.
Our tool is a professional audio laboratory that fits right in your browser. We don't just record your voice; we show you the science of your sound. Using advanced technology called FFT, we can show you the shapes of your voice on the screen. It is easy, fun, and very helpful for anyone who uses a microphone.
Think of sound like a rainbow. A rainbow is made of many colors, and sound is made of many "frequencies." FFT Analysis is like a prism that separates your voice into all those different parts. Bass notes (low sounds) show up on the left, and treble notes (high sounds) show up on the right. Our tool shows you these sounds as moving bars, so you can see if your mic is picking up deep voices or high whistles correctly!
Even when you are completely quiet, your microphone might still "hear" something. This is called the Noise Floor. It can be caused by a fan in the room, an air conditioner, or even electricity moving through the wires. Our tool measures this in decibels (dB). A good microphone will have a very low noise floor, meaning it stays quiet when you aren't talking. If your bars move when the room is silent, you have "background noise."
Update: Jan 2026 (v4.2.18)
Added support for 192kHz professional studio microphones. Improved the "Sibilance Tracker" to help you find out if your "S" and "T" sounds are too sharp. New "Decibel Meter" allows you to calibrate your gain perfectly for zoom calls.
Update: Nov 2025 (v3.9.0)
Introduced "Echo Cancellation Detection." The tool now warns you if your computer is accidentally muffling your voice to hide echos. Fixed a bug where some USB headsets would disconnect during high-volume testing.
Calibrate Your Voice
If people tell you that you are "too quiet" or "too loud," use our decibel meter to find the perfect volume setting. Aim for the "sweet spot" where the bars are big but not hitting the top!
Check for Interference
Sometimes computer chargers or lights can cause a "humming" sound in your mic. Use our FFT analyzer to see if there is a static line in your audio that shouldn't be there.
Test New Headsets
Microphones on gaming headsets can be hit-or-miss. Test yours here to see if it sounds natural or if it's cutting out important parts of your voice.
Testing your sound is as easy as talking!
Expert Tip: If you want to sound like a professional, keep your microphone about 4 to 6 inches away from your mouth and use a "pop filter" to stop wind sounds when you say words like "Pop" or "Bank".
Acoustic Standard ISO-MIC-2026.B • Real-time FFT Engine
Can I record my voice with this tool?
Our tool is for live analysis. We don't record or save audio because we care about your privacy. If you want to record, you can use our feedback to find the best settings first!
Why are the bars not moving?
Make sure your microphone is plugged in and that you gave the website permission to use it. Also, check if your physical "mute" button on your headset is turned on!
Does it work with studio mics?
Yes! It works with USB microphones, XLR interfaces, and built-in laptop mics. It can handle professional audio quality with very high detail.