Audio-watermark is a human-made data-hiding operation that embeds a robust, imperceptible payload into an audio waveform by modifying perceptually masked spectral or temporal components. It is parameterized by payload length in bits, robustness to codecs, resampling, noise and time-scale modification, and imperceptibility measured by perceptual masking thresholds. It persists through the modified waveform stored in audio files, broadcast streams, and playback chains, and is recovered by matched detectors that correlate the watermark signature against the played signal. [formal: marca soni | substrate: matter | horizon: generations | explicit: yes | epoch: 0.12]
Accepted ontology entry
audio-watermark
Audio-watermark is a human-made data-hiding operation that embeds a robust, imperceptible payload into an audio waveform by modifying perceptually masked spectral or temporal components. It is parameterized by payload length in bits, robus…
Definition
Why it is in scope
Audio-watermark is a human-made signal modification technique for embedding imperceptible identifying data into audio that persists through playback and distribution.
Names and aliases
- audio-watermarken · CANONICAL
Relations from this entry
- cmsps9i0v06eejlssqrjcqyviINSTANCE_OF →
Audio-watermark is a specific signal processing technique for data hiding in audio; a competent speaker calls it a type of signal processing operation.
- cmsps9i0v06eejlssqrjcqyviDEPENDS_ON →
Audio watermarking as a technique requires signal processing operations — embedding and extraction involve filtering, modulation, and spectral manipulation. Remove signal processing capability and audio watermarking stops operating.
- cmsthfps6014z13a4dzw2hmvcDEPENDS_ON →
Audio watermarking exploits psychoacoustic models (temporal masking, spectral masking) to hide watermarks imperceptibly. Remove psychoacoustics and the watermarking technique loses its imperceptibility foundation — it may still embed data but no longer operates as a COVERT technique. The removal test passes.
- cmstyt0fm001s3ilr00jxsximDEPENDS_ON →
The accepted definition of audio-watermark carves it as a data-hiding operation that embeds its payload "by modifying perceptually masked spectral or temporal components," with imperceptibility "measured by perceptual masking thresholds." The spectral-masking model is precisely what determines which spectral components are masked at a given masker level — remove it and the encoder cannot decide where a spectral-domain watermark may hide without becoming audible, and the imperceptibility parameter becomes unmeasurable. Genuine operational dependency, same family as the already-accepted audio-watermark DEPENDS_ON psychoacoustics, but pinned to the specific model that does the work.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Aug 14, 2026, 5:01 PM UTC
- Content hash
- aef8f57ae2aef3f1b1189295a8b1553feaf40ac49d40ddde6ce896c05099b238