Audio and sound tests · find what is wrong
Equipment checks, hearing screenings, and stereo perception tests — all generated live in your browser. Start with the quick sound test if you are not sure where to begin.
Equipment tests
Speakers, headphones, earbuds, subwoofers, and latency.
- 8D Audio Test — Binaural ImagingTest 8D audio spatialization with a circular binaural orbit and lateralization checks. Verifies headphone imaging only. Free in your browser, no download.
- Audio Equipment Test — Full SuiteFull audio equipment suite covering speakers, headphones, earbuds, subwoofers and surround with guided steps. Start here if unsure. Free in your browser.
- Audio Latency Test — Bluetooth msMeasure Bluetooth and device audio delay in milliseconds and calibrate AV sync offset. Find whether lag is your gear or app. Free in your browser, no download.
- Audio Wizard — Fix No Sound FreeDescribe your symptom — no sound, dropped channel, buzz, weak bass or clipping — and get a guided verdict plus clear fixes. Free in your browser, no download.
- AV Sync Test — Lip-Sync CalibrationCalibrate lip-sync with flash-and-click cadence across 5 offsets and dial in TV or soundbar delay. Find video vs audio lag. Free in your browser, no download.
- Bass Test Online — 30–200 Hz TonesBass test with 30–200 Hz tones and a 30–250 Hz sweep to check low-end extension and room boom. Headphones reveal most. Free in your browser, no download.
- Earbud Test — Seal & Balance CheckTest earbuds and IEMs for seal, sub-bass loss, channel balance and clogged nozzles with precise left-right checks. Find fit faults. Free in your browser.
- Headphone Burn-In — Pink NoiseBreak in new headphones with alternating pink noise and 20 Hz–20 kHz sweeps on a controlled loop. Evidence is mixed; use gently. Free in your browser.
- Headphone Test — Drivers & ImagingTest headphones online with channel isolation tones, driver matching, bass check and localization trials. Find dead drivers fast. Free, runs in your browser.
- Mic Loopback Test — Hear YourselfTest your mic with a 10-second record-and-playback loopback plus live dBFS meters and monitoring. Hear your true tone. Free in your browser, no download.
- Mic Test Online — Free Mic CheckFree online mic test with live waveform, dBFS level meter, device picker and headphone loopback. Check your microphone works. No upload, runs in browser.
- Sound Test Online — Free CheckQuick online sound test for left, right and stereo channels with a clear 1 kHz reference tone. Confirm each side works in seconds. Free, runs in your browser.
- Speaker Test — Balance & PolarityOnline speaker test with left-right pink noise, 1 kHz tone, balance walk and polarity check with mono sum. Find wiring faults fast. Free in your browser.
- Subwoofer Test — Tones & SweepSubwoofer test with 20–100 Hz tones, a 20–200 Hz sweep and kick pulses to check extension, rattle and punch. Small speakers stay silent. Free in browser.
- Surround Sound Test — 5.1 & 7.1Test 5.1 and 7.1 surround with binaural spatialization, speaker mapping and channel ID for receivers. Headphones work too. Free in your browser, no download.
Hearing & perception
Audiogram screening, frequency range, and stereo perception.
- Frequency Check — Low & High WalkWalk stepped low 20–200 Hz and high 2–20 kHz frequency checks with per-step heard capture and a saved map. Screening only. Free in your browser, no download.
- High-Frequency Hearing Test — 8–22 kHzCheck which high tones from 8 to 22 kHz you notice with discrete sine presets and loudness warnings. Educational screening only. Free in your browser.
- Low-Frequency Hearing Test — 10–100 HzCheck which low tones from 10 to 100 Hz you notice with discrete presets and a saved heard map. Small speakers stay quiet. Free in your browser, no download.
- Mosquito Tone Test 17.4 kHz — FreeMosquito tone test with the 17.4 kHz classic plus 8–22 kHz bursts to estimate hearing age. Volume-limited for safety. Free in your browser, no download.
- Online Hearing Test — Free ScreeningFree online hearing test screening each ear from 125 Hz to 8 kHz with warble tones and an audiogram chart. Educational screening only. Runs in your browser.
- Sound Localization Test — L/C/RTest directional hearing across 8 trials with timing, level and pan cues, scored with instant feedback. Headphones required. Free in your browser, no download.
- Stereo Test — Pan & Phase CheckStereo test checking left-right identity, an 8-second pan sweep and mono compatibility with polarity flip. Find routing faults fast. Free in your browser.
- Tinnitus Frequency Test — Match PitchMatch your tinnitus pitch with sine tones and narrowband noise, per ear, with saved matches. Educational screening, not a diagnosis. Free in your browser.
- Vocal Range Test — Find Voice TypeFind your vocal range and voice type with private microphone pitch detection across sustained notes. Nothing is uploaded or stored. Free in your browser.
Audio quality & technical
Distortion, dithering, spectrum, and loudness analysis.
- Aliasing Test — Nyquist FoldoverHear Nyquist foldover and difference tones with forensic test signals plus spectrum views. Learn exactly what aliasing sounds like. Free in your browser.
- Audio Oscilloscope — Live ViewerFree online oscilloscope showing live audio waveforms with time-base, gain, pause and L/R colors. Sine renders smooth, clipping flats. Runs in browser.
- Audio Spectrum Analyzer — FreeFree audio spectrum analyzer with log-frequency display, peak hold, L/R colors and spectrogram. Verify with the built-in 1 kHz tone. Runs in your browser.
- Dithering Demo — Noise ShapingHear dithering and noise shaping tame quantization distortion when reducing bit depth, with spectrum views. Interactive demo. Free in your browser, no download.
- Dynamic Range Test — Crest FactorMeasure dynamic range and crest factor with peak/RMS analysis in the style of classic TT meters. Indicative, not mastered proof. Free in your browser.
- IMD Test Online — Distortion CheckTest intermodulation distortion with SMPTE and DIN twin-tone pairs and sideband readouts. Learn how IMD spectra read. Free in your browser, no download.
- Loudness Meter — Free LUFS ToolFree online loudness meter measuring Integrated LUFS, short-term and momentary loudness with K-weighting. For mixes and masters. Runs in your browser.
- Microphone Quality Test — SNR ScoreMicrophone quality test measuring noise floor, SNR and clipping with a 0–100 score and setup tips. For podcast and voice. Free in your browser, no download.
- Online Decibel Meter — Free ToolFree online decibel meter showing live dBFS levels with Fast/Slow ballistics and peak hold. Relative readings, not calibrated SPL. Runs in your browser.
- Room Acoustic Test — MATT ModesTest room acoustics with MATT articulation bursts to find modes, flutter echo and ringing. Your ears beat guesswork here. Free in your browser, no download.
- THD Test Online — Distortion CheckCheck total harmonic distortion with a built-in synthetic self-test that verifies the FFT method first. Indicative, not calibrated. Free in your browser.