Audio Tests

Choose the check that matches the symptom

If other people cannot hear you, begin with microphone input rather than turning up your speakers. The microphone check opens the browser’s selected input, displays a relative level meter and observes whether sound crosses its detection threshold during a short run. If you cannot hear others, check your system output selection and try the speaker or headphone channel controls instead.

For stereo problems, listen to each intended side separately. Speaker Test offers Left, Both, Right and a deliberate alternating sequence. Headphone Test adds a Left → Right → Both sequence for headphones, earbuds and headsets. The visible indicator names what should play; it is not confirmation that sound physically reached the correct device.

Input permissions and output controls are different

Microphone access requires your explicit action and browser permission on a secure page. Operating-system microphone privacy settings can also block access even after a website is allowed. Testpartout analyses the stream locally without recording it or playing your microphone through the speakers. Select the intended microphone in system settings before starting; this test does not provide its own input-device picker.

Speaker and headphone tones need no microphone permission. Playback starts only when you choose a control. Lower system volume before the first tone: the page uses conservative digital gain but cannot control your amplifier, headset or operating-system volume. Stop immediately if listening is uncomfortable. These checks are not hearing tests or audiograms.

Read channel and reference-tone observations cautiously

A left-only tone heard on the right suggests a routing or orientation issue worth repeating. Check the L/R labels on a headset and the physical position of speakers before changing settings. Sound in both ears from a left-only control may reflect mono accessibility settings, device processing or a downstream mixer. A silent side can come from balance, a connection, an output selection or hardware; the browser cannot identify which.

Speaker references at 250 Hz, 500 Hz, 1 kHz, 2 kHz and 4 kHz provide moderate comparison tones, not a calibrated frequency-response measurement. Different pitches can sound different in loudness because of the device, room and perception. Buzzing or distortion should be checked at a lower comfortable system level and compared across another source; it is not proof of a specific speaker defect.

Bluetooth, routing and communication apps

A Bluetooth headset may expose different playback and communication modes. Selecting its microphone in a calling application can change playback quality or routing. Compare the active system output, the call app’s device selections and any wired alternative available to you. Do not assume that a successful browser test means Zoom, Discord or a game uses the same input and output.

Check mute buttons, stereo balance and mono audio settings before reconnecting equipment. For USB devices, try a supported direct port rather than adding adapters. For external speakers, check power, cable seating and the amplifier input without opening equipment. Change one setting at a time and repeat the same short test so the observation remains comparable.

What remains private, and what remains unverified

Generated tones stay in the browser. Microphone audio is processed locally, not recorded or uploaded. The page cannot listen to your speaker output, certify wiring, measure acoustic sound pressure or diagnose hearing. Your reported channel observations remain local and are not added to a shared benchmark. A useful result narrows the next check; it does not replace manufacturer support for a persistent fault.