Decibel
|
|
appearance as argument number 1 |
(documentation Decibel EnglishLanguage "The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 101/ 10 (approximately 1.26) or root-power ratio of 101⁄20 (approximately 1.12).[from Wikipedia]") | Merge.kif 7457-7461 | |
(instance Decibel SoundPressureLevelUnit) | Merge.kif 7455-7455 |
appearance as argument number 2 |
(termFormat EnglishLanguage Decibel "dB") | Merge.kif 7463-7463 | |
(termFormat EnglishLanguage Decibel "dB(A)") | Merge.kif 7478-7478 | |
(termFormat EnglishLanguage Decibel "decibel (A-weighting)") | Merge.kif 7477-7477 | |
(termFormat EnglishLanguage Decibel "decibel") | Merge.kif 7462-7462 |
antecedent |
consequent |
(=> (and (instance ?MT MusicalTone) (soundFrequency ?MT (MeasureFn ?FREQ Hertz)) (loudness ?MT (MeasureFn ?LLB Decibel)) (located ?MT (WhereFn ?H (BeginFn (WhenFn ?MT)))) (greaterThan ?LLIMIT ?LLB) (greaterThan ?LLB ?ULIMIT) (greaterThan ?FREQ 250) (greaterThan 8000 ?FREQ) (instance ?H Human) (instance ?L Listening) (agent ?L ?H)) (hearingAcuity ?H (MeasureFn ?LLIMIT Decibel) (MeasureFn ?ULIMIT Decibel))) |
Medicine.kif 1753-1773 |