Audio & Microphone — Tests & Tools

Test your microphone in the browser — speak and watch the live waveform and dB level meter, check your peak level and noise floor, and record a short clip to hear exactly what your mic picks up. Nothing is uploaded.

Record your voice online — an in-browser dictaphone with pause and resume, a live waveform, and a player and download for every take. Everything stays on your device; nothing is uploaded.

Test your speakers, headphones, or earbuds in the browser. Play a tone through the left, right, or both channels, sweep across the stereo field, and find out in seconds whether a channel is silent.

Test your headphones or speakers across the full audio spectrum. Play pure sine tones from 20 Hz to 20 kHz with a slider, presets, and a full sweep — hear exactly where your gear rolls off, distorts, or goes silent.

Generate a steady tone from 20 Hz to 20 kHz. Pick sine, square, sawtooth, or triangle, dial exact Hz or a musical note, and pan left or right.

Free online metronome from 20 to 260 BPM. Set the tempo with a slider or tap it in, accent the first beat of the bar, and practice to a sample-accurate click with a beat indicator and measure counter.

Test your room acoustics with MATT-style gated tone bursts. Sweep a crisp Ta-Ta-Ta pattern through your speakers and mark the frequencies where the room blurs the bursts into a smear — the classic articulation test, right in the browser.

Play calibrated test tones in the browser. Step a 1 kHz sine through exact THD levels from 0.001% to 5% and find the distortion you can actually hear, or run a perceptual 20 Hz–20 kHz sweep that should sound evenly loud from end to end.

Test how deep your subwoofer, speakers, or headphones really go. Play pure sine tones from 20 to 200 Hz — tap a preset, fine-tune with the slider, or sweep the whole bass range and note exactly where your low end stops.

Hear quantization, dithering, and noise shaping for yourself. A pulsing tone steps from 0 down to −90 dBFS, requantized live to 4–16 bits — plain, dithered, or noise-shaped — so you can find exactly where each version disappears.

Test your subwoofer with six synthesized kick drums stepping down from 70 to 20 Hz — each should get deeper, never louder — then sweep one channel from 200 to 40 Hz to find the frequency where bass stops being localizable and set your crossover below it.

Test every speaker in a stereo, 5.1, or 7.1 setup. Click a speaker on the room map to play a tone on that channel alone, sweep through all channels automatically, and check the subwoofer with a 30–120 Hz bass sweep.

Measure sound levels with your microphone, right in the browser. A live decibel readout in estimated dB SPL or exact dBFS, peak, average, and minimum stats, and a reference chart of everyday sounds — nothing is recorded or uploaded.

Test your hearing range in the browser. A pure tone sweeps down from 22 kHz — tap the moment you hear it to find your upper limit, then a second sweep rises from 10 Hz for your low end, with an age-typical comparison for your result.

Test your headphones or headset in the browser — play a tone through the left, right, or both channels, sweep the stereo field, check the balance and wiring polarity, and quiz yourself on which ear is which.

Test your stereo setup in the browser. Check the left and right channels and the phantom center, hear the level, timing, and head-shadow cues your brain uses to place a sound, and take a 10-round quiz on where a knock comes from.

Blind test your hearing with real statistics. Guess whether a mystery music clip is 16-bit or crushed to 8-bit, and whether a hi-hat lands in sync with the kick or milliseconds late — vote round by round and see if your score beats pure guessing.