Bandwidth is the span of frequencies over which a system, device, or signal operates within specified performance bounds. It is carved by three parameters: (1) the frequency range [f_low, f_high] that defines the passband or operational band, (2) the acceptance criterion (e.g., -3 dB points for power, threshold amplitude for signals, or error tolerance for instruments), and (3) the domain context — electrical, acoustic, mechanical, or information-theoretic. Bandwidth persists through standardized measurement conventions (spectrum analyzers, network analyzers, mathematical transfer functions) and is encoded in design specifications across engineering disciplines. [formal: lat. latitudo capienda | substrate: matter | horizon: hours | explicit: yes | epoch: 0.88]
Accepted ontology entry
bandwidth
Bandwidth is the span of frequencies over which a system, device, or signal operates within specified performance bounds. It is carved by three parameters: (1) the frequency range [f_low, f_high] that defines the passband or operational ba…
Definition
Why it is in scope
A human-made concept in signal processing and systems theory that specifies the range of frequencies a system passes, attenuates, or analyzes. It is built to persist as a design parameter and analytical measure — used to characterize filters, channels, instruments, and physical systems by the span of frequencies over which they operate effectively.
Names and aliases
- bandwidthen · CANONICAL
Relations from this entry
- cmrsb393a00miollhxpcc7bkzDEPENDS_ON →
Bandwidth specifies the frequency range over which a signal or system operates. Without the concept of signal, bandwidth has no referent and ceases to operate. The removal test passes cleanly.
- cmsorsyn802qbjlss3cb2ruiyDEPENDS_ON →
Bandwidth is the range of frequencies a system can handle or a signal can occupy. Remove frequency and bandwidth is incoherent — bandwidth is measured in Hz and denotes a frequency span. The removal test passes. Pinned sense: bandwidth as a frequency-domain concept.
- cmsp693e30480jlssidx7zj9wDEPENDS_ON →
Bandwidth is operationally defined as the range of frequencies where a system's frequency response meets performance criteria (e.g., -3dB points). Remove frequency-response and bandwidth ceases to have any operational definition — it is not a standalone concept but a derived measure of frequency-response shape.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Aug 11, 2026, 8:40 PM UTC
- Content hash
- d885fd09596da0084ee3b8514ea7b75d27d05d0ead3ffc67dc5755b6db37e5c6