ARSONKUPIKAudio test signals
IDEN
Product
Free browser-side WAV generator

Generate repeatable audio test signals without uploading audio anywhere.

Create a PCM WAV reference for signal-path checks, speaker or headphone channel verification, processor measurements and repeatable comparisons. Generation happens locally in the browser and defaults to a conservative -24 dBFS peak ceiling.

Open generatorWhy this exists
Controlled source material

Choose a signal, level and duration—then download the WAV.

The level setting is a digital peak ceiling. It is not a calibrated loudspeaker SPL, LUFS or RMS target.

All generated signals use 20 ms file-edge fades to reduce clicks.
Allowed range: -60 to -6 dBFS. Start low.
1–30 seconds. Channel/polarity sequences divide the duration into stages.
Output is 16-bit PCM WAV for broad compatibility.

Nothing is generated or played until you press Generate WAV.

Listening safety: lower monitor or headphone volume before previewing test signals. Sweeps, high frequencies and continuous noise can be uncomfortable. This utility is not a hearing test, audiogram tool or medical diagnostic device.
Not generatedSignal48 kHz / 16-bit PCMFormat-24 dBFS peak ceilingLevel meaning

Privacy: the generator uses JavaScript, typed arrays and a local Blob URL. It does not intentionally send the generated WAV, your settings or listening notes to a server.

1 kHz sine

Reference level and basic signal-path checks

  • Useful for confirming gain, routing, meter response and channel consistency.
  • The selected dBFS value represents digital peak amplitude.
  • Do not infer acoustic SPL without a separately calibrated monitoring chain.
Log sweep

Broad frequency-path inspection

  • Sweeps from 20 Hz to the lower of 20 kHz or 45% of sample rate.
  • Useful for inspecting filtering, resonances or frequency-dependent behaviour.
  • A sweep alone does not describe transient, distortion or perceived spatial quality.
Pink noise

Repeatable broadband noise

  • Uses a deterministic seeded approximation so repeated generation is consistent for the same settings.
  • Normalized to the selected peak ceiling, not a calibrated loudness target.
  • Useful for spectral-path checks and repeatable broadband excitation.
Stereo checks

Channel identity and polarity behaviour

  • Channel sequence: both, left, right, both.
  • Polarity sequence: first half in phase, second half with the right channel inverted.
  • Use low playback level; polarity cancellation depends on the playback and summing path.
Reproducibility kit

Keep the signal definition with the result.

The manifest documents generator semantics. CSV templates help record the actual product version, route, controls and measurements rather than relying on memory.

Signal manifest JSONGenerator version, definitions, level semantics and safety notes.Measurement log CSVHeaders for signal path, controls, levels and measurement data.
Open the Evidence LabMeasurement protocolFair A/B listening method