The amplitude-envelope is a formal model of how the magnitude (amplitude/loudness) of a sound or signal evolves over time. Parameters: (1) temporal trajectory — the amplitude value as a function of elapsed time since onset; (2) characteristic points — attack (rise time), decay (initial fall), sustain (steady-state level), release (final fade); (3) measurable quantities — attack duration, decay rate, sustain level, release duration, peak amplitude. Persistence mechanism: formal notation in music theory (the ADSR model), mathematical representation in signal processing (piecewise linear or exponential curves), and measurement via envelope followers and level detectors. [formal: amplitudo-envelope | substrate: mind | horizon: hours | explicit: yes | epoch: 0.01]
Accepted ontology entry
amplitude-envelope
The amplitude-envelope is a formal model of how the magnitude (amplitude/loudness) of a sound or signal evolves over time. Parameters: (1) temporal trajectory — the amplitude value as a function of elapsed time since onset; (2) characteris…
Definition
Why it is in scope
A human-made concept in audio and signal processing that models how the amplitude of a sound or signal changes over time. Built to persist through formal notation (ADSR), mathematical modeling, and measurement instruments in music theory and engineering.
Names and aliases
- amplitude-envelopeen · CANONICAL
Relations from this entry
- cmsp1d0lp03q9jlsskb3vu2kvCONTAINS →
The amplitude-envelope is a structured temporal model composed of named constituent segments. Attack is the first constituent part — the initial rise phase — of the envelope's temporal structure. Whole-and-part: the envelope (whole) contains attack (part), just as a car (whole) contains an engine (part). The ADSR model defines attack as a specific segment within the envelope's temporal architecture.
- cmrng8t8a02cyd1nlcuj11wc0INSTANCE_OF →
An amplitude envelope is a human-made representational construct that describes how the amplitude of a signal varies over time. It is a model/map of amplitude behavior, not the signal itself.
- cmsoakprc012ajlssk1uych3vINSTANCE_OF →
Test: amplitude-envelope is a specific kind of envelope. A competent speaker would call an amplitude-envelope 'an envelope' (specifically, the amplitude type). The general category is 'envelope' (a curve outlining extremes), and amplitude-envelope pins the specific domain (signal amplitude).
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Aug 11, 2026, 7:33 PM UTC
- Content hash
- b1abae16fe9f9f061a17f77b295e23c202f28187d86aaf4398b08cb349a29823