Local synthetic media lab
Create an audio test file
Generate a tone, sweep, seeded noise signal, or digital silence. The source is synthesized in a dedicated browser worker; no microphone, upload, account, or server-side processing is involved.
Recipe v1
Synthetic audio recipe
Capability
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Reproducibility: byte-identical. The recipe and pinned encoder path determine the expected output tier.
What the hashes prove
PCM and pinned WASM paths are expected to be byte-identical for the same recipe version. Ogg/Vorbis and Opus use a browser codec when available and promise content equivalence, not cross-machine byte identity. Encoder licensing and codec notes are published in the documentation.