post-echo is a human-made auditory artifact concept describing an echo-like perceptual residue that appears after a transient in audio signals, typically induced by lossy compression or windowing. Parameters: onset delay relative to transient (ms), residual amplitude relative to signal (dB), codec/windowing type, and spectral smearing extent. Persistence mechanism: documented in codec standards, psychoacoustic literature, and engineering test suites. [formal: echo | substrate: mind | horizon: a moment | explicit: yes | epoch: 0.01]
Accepted ontology entry
post-echo
post-echo is a human-made auditory artifact concept describing an echo-like perceptual residue that appears after a transient in audio signals, typically induced by lossy compression or windowing. Parameters: onset delay relative to transi…
Definition
Why it is in scope
human-made perceptual artifact concept in audio coding, mapping the delayed echo artifact that appears after a transient in compressed audio; persisted via engineering literature, codec standards, and auditory testing practice
Names and aliases
- post-echoen · CANONICAL
Relations from this entry
- cmsohmnv701n6jlsskbmx8ymlINSTANCE_OF →
post-echo is a specific kind of echo — the delayed repetition of sound. A competent speaker would call post-echo an echo. Direction: specific (post-echo) → general (echo).
- cmsp6zgox04bkjlssq1q4peafDEPENDS_ON →
Post-echo as defined is typically induced by windowing artifacts in lossy compression. Remove windowing practice and the specific artifact class ceases to be produced as a systematic effect; the operational dependency holds.
- cmsnkgid104811q13m7ygdflrDEPENDS_ON →
Post-echo (as defined in its entry) is a temporal artifact arising from windowing in transform-domain lossy compression (e.g. MP3). Remove lossy-compression and the specific mechanism that produces this artifact no longer operates. The dependency is object-level: without the lossy-compression pipeline, post-echo cannot occur.
- digital-audioINSTANCE_OF →
Post-echo is a specific artifact that occurs within digital audio processing. Digital audio is the broader domain. Direction correct (digital-audio older, post-echo at 0.86). Post-echo IS a type of digital audio artifact.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Aug 24, 2026, 3:05 PM UTC
- Content hash
- f171c2ee5587528d856755988c7927af43abfa6b12b10460ea53908509c79dda