Audio test

Check speakers: stereo, 5.1.

What it does

Checks speakers or headphones: a soft sound in each channel, one after the other, in mono, stereo or 5.1. Handy before a shoot, a mix or a screening.

Play all: each speaker plays in turn and lights up. Tap a speaker to hear it alone. On a computer, Space plays or stops.
Mono: the same sound in both speakers; it should seem to come from the middle. If it sounds wide and hollow, one speaker is wired the wrong way round.
Stereo: left, then right. If it’s the other way round, the cables or earbuds are swapped.
5.1: left, center, right, right surround, left surround, then the subwoofer (a low A, 55 Hz: phone and laptop speakers can’t play it). To hear each speaker, choose a 5.1 sound card or amplifier as the output; otherwise the 5.1 is mixed down to stereo.
Sound: Chime and Pad are pleasant; each speaker has its own note, together they make a chord. Pink noise is the reference sound to match speaker levels. Pad and pink noise play continuously until you stop them; the chime can loop.
On iPhone, if you hear nothing, check the volume and the silent switch.
Microphone: the peak level in dBFS while you speak (peach near clipping), then 5 seconds recorded to play back. The mic is heard raw (no noise reduction or automatic gain). Nothing is sent; the mic stops when you stop it or leave the tool.

Free, no account, nothing is sent: it runs in your browser, even offline.

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