Tool Category
Microphone & Audio Test Tools
Audio matters more on a call than video does. People tolerate a mediocre picture for an hour; they disengage from sound they have to strain against within minutes. These tools cover the whole chain — what your microphone captures, what your speakers reproduce, whether they stay in sync with your video, and the specific problems that turn "quiet but clear" into "quiet and hard to follow": noise suppression, gain pumping, sibilance, proximity effect, and more.
The Tools
Every Tool in This Category
Core Microphone & Speaker Checks
Microphone & Acoustics TestMeasures your noise floor, signal-to-noise ratio, clipping, plosives, sibilance and room reverb — considerably deeper than a bouncing level bar.
Speaker & Headphone TestTests left and right channels separately to find swapped or silent channels, plus a frequency sweep from 60Hz to 16kHz.
A/V Sync TestMeasures the millisecond offset between your audio and video using a real clap test, and tells you which one is late.
Signal Quality & Noise
Active Noise Suppression Stress TestPlays synthesized noise and measures how much your browser's real noise suppression actually reduces it.
Echo & Feedback Loop DetectorSafely measures speaker-to-mic coupling using a brief, quiet test tone instead of triggering real feedback.
Microphone Gain & AGC MonitorWatches for the noise-floor "pumping" pattern caused by aggressive automatic gain control.
Pop Filter & Sibilance AnalyzerMeasures harsh "s" and "t" sounds, then lets you hear a live simulated pop-filter preview.
Microphone Distance & Proximity Effect MeterTracks real bass-boost as you move closer to your mic, using checkpoints you mark yourself.
Advanced & Multichannel
Stereo Separation & Phase Alignment TestChecks whether your mic gives real stereo at the browser level, and measures phase correlation when it does.
Multichannel Input & Channel Mapping TesterReports your device's real channel count and gives live per-channel meters for multi-input audio interfaces.
Speech Intelligibility TestMeasures how much a specific noise type masks the exact frequencies that carry word clarity.
Testing input and output are different jobs
Microphone test = what others hearCovers the capture side: is your voice loud enough above the room noise, are you clipping, is the room too reverberant.
Speaker test = what you hearCovers playback: are both channels working, are they the right way round, does your output device reproduce the range you expect.
A/V sync = whether they line upA separate problem from either. Perfect audio arriving 150ms late is still distracting, and the fix is different from anything the other two tools address.
The most common audio problems, in order
A high noise floorConstant background sound — fans, air conditioning, traffic. This forces noise suppression to work hard, which is what makes voices sound underwater. Measured directly by the microphone test.
ClippingYour input hitting maximum and squaring off. Once clipped the audio is permanently distorted; no processing recovers it. Lower your gain or move back.
Room reverbLong reflections make you sound distant and hollow. Soft furnishings help far more than a better microphone.
Bluetooth latencyWireless audio adds substantial delay by design. If lip sync is off, this is the first thing to remove from the chain.
Which new tool solves your specific problem
People say they can hear your keyboard or background chatterThe Noise Suppression Stress Test tells you whether your browser's suppression is actually helping.
You get feedback squeal or echo on callsThe Echo & Feedback Loop Detector measures the coupling risk safely, without triggering real feedback.
Your mic sounds thin or hollow after downmixingThe Stereo Separation & Phase Alignment Test checks for phase cancellation.
You use a professional audio interface with several inputsThe Multichannel Input & Channel Mapping Tester confirms nothing is swapped or silent.
Your background noise seems to "breathe" or pulse in volumeThe Microphone Gain & AGC Monitor catches this pumping pattern directly.
Your "s" and "t" sounds are harsh or piercingThe Pop Filter & Sibilance Analyzer measures it and lets you hear a live fix.
You want a warmer voice, or yours sounds boomy up closeThe Proximity Effect Meter quantifies your mic's bass boost at different distances.
You're not sure people can actually understand you in a noisy roomThe Speech Intelligibility Test measures clarity loss for the specific noise you're dealing with.
FAQ
Frequently Asked Questions
How do I test my microphone online?Open the Microphone & Acoustics Test, allow microphone access, then measure your noise floor in silence before recording a few seconds of speech. It reports levels, clipping, plosives and room reverb.
How do I test if my speakers are working?Use the Speaker & Headphone Test. It plays a tone through the left and right channels separately, which also reveals whether your channels are swapped — a common and easily missed problem.
Why does my microphone sound quiet or muffled?Usually a low signal-to-noise ratio rather than low volume. If your voice is not far enough above the background noise, noise suppression degrades it trying to compensate. The microphone test measures both figures.
How do I fix audio and video being out of sync?Measure the offset with the A/V Sync Test first. If you are on Bluetooth audio, switching to wired removes most of the delay. For recording, apply the measured offset directly in your editing software.
Do these audio tests record my voice?No. All analysis happens in your browser and nothing is uploaded. The microphone test analyses audio in memory and discards it.