IEVref: 801-32-61 ID: Language: en Status: Standard Term: beamwidth, Synonym1: Synonym2: Synonym3: Symbol: Definition: angular measure of a transducer beamNote 1 to entry: The beamwidth is typically measured in the transducer far field.Note 2 to entry: The beamwidth can be quantified by either the half-angle or full angle.Note 3 to entry: The beamwidth can be described at any one of the following points relative to the maximum: −3 dB, −6 dB, or −10 dB. However, it is imperative that whichever metric is used to calculate beamwidth, the relative level that defines that angle shall be stated with that beamwidth.Note 4 to entry: The beamwidth is typically measured relative to the maximum response angle, rather than the principal axis of the housing or mounting points of the transducer.Note 5: The beamwidth is generally dependent on acoustic frequency. Publication date: 2021-02 Source: Replaces: Internal notes: CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: