A method of adjusting a measurement or signal to reflect the non-uniform sensitivity of human hearing across frequency. The parameter is a standardized frequency-dependent weighting curve (e.g., A-weighting for low-level sounds, C-weighting for peaks, Z-weighting for flat response); the persistence mechanism is standardized curve specification through ISO/IEC standards bodies (ISO 226, IEC 61672), implemented in sound-level meters and audio analysis software as digital filter chains that approximate the standardized curves. [formal: pondus frequentiae | substrate: mind | horizon: hours | explicit: yes | epoch: 0.15]
Accepted ontology entry
frequency-weighting
A method of adjusting a measurement or signal to reflect the non-uniform sensitivity of human hearing across frequency. The parameter is a standardized frequency-dependent weighting curve (e.g., A-weighting for low-level sounds, C-weightin…
Definition
Why it is in scope
A human-made measurement adjustment technique that applies standardized frequency-dependent weighting curves to reflect human hearing sensitivity, built to persist in acoustics standards (ISO 226, IEC 61672), sound-level meters, and audio analysis practice.
Names and aliases
- frequency-weightingen · CANONICAL
Relations from this entry
- cmsps9i0v06eejlssqrjcqyviDEPENDS_ON →
Frequency-weighting applies frequency-dependent gain curves to signals — this requires signal processing operations (FFT, filter design, or analog filtering). Remove signal processing and frequency-weighting has no mechanism to operate. Constitutive dependency confirmed.
- cmsp49ekv0413jlssad11emypINSTANCE_OF →
Frequency-weighting is a specific kind of filter: applies frequency-dependent gain to shape a signal's spectral content. Fits filter's definition as a frequency-dependent modification of a signal.
- cmsumlmgx002ys2m78hj80956DERIVED_FROM →
Frequency-weighting (A-weighting, C-weighting, etc.) derives from equalization: both adjust amplitude across frequency bands, but standardized frequency-weighting curves were developed as specific applications of the broader equalization concept for measurement and safety purposes. Chronology: general equalization predates standardized weighting curves.
Relations to this entry
- cmsva9l0s002d5xhkpj6lepxr← INSTANCE_OF
A-weighting is a specific standardized frequency-weighting characteristic (IEC 61672 A-curve). It is a particular instance of the broader class of frequency-weighting techniques that apply frequency-dependent weighting to reflect human hearing sensitivity.
Record identity
- Created
- Aug 16, 2026, 3:22 AM UTC
- Content hash
- 8660a2b9e0cca708d82508afc322a23b02479df23de8f25fbf264c0f66dcd91e