What is BS EN 61094-5- Measurement microphones about?
BS EN 61094-5 is a safety standard on methods for pressure calibration of working standard microphones.
BS EN 61094-5 is applicable to working standard microphones with removable protection grids meeting the requirements of IEC 61094-4 and to laboratory standard microphones meeting the requirements of IEC 61094-1. BS EN 61094-5 describes methods of determining the pressure sensitivity by comparison with either a laboratory standard microphone or another working standard microphone with known sensitivity in the respective frequency range.
Note: Alternative comparison methods based on the principles described in IEC 61094-2 are possible but beyond the scope of BS EN 61094-5.
Who is BS EN 61094-5- Measurement microphones for?
BS EN 61094-5 on methods for pressure calibration of working standard microphones is relevant to:
- Manufacturers of measurement microphones
- Testing authorities
- Sound-field personnel
Why should you use BS EN 61094-5- Measurement microphones?
Measurement microphones are pressure microphones that ideally have an omnidirectional pick-up pattern.
BS EN 61094-5 assists the user with several types of measurement microphones like reference microphones, test microphones, and monitor microphones. The pressure sensitivity of a measurement microphone is defined in terms of a sound pressure applied uniformly over the diaphragm. The principle of the method allows the test microphone to be attached to a particular preamplifier and the sensitivity of the system, which may be referred to as the output of that preamplifier.
Overall, BS EN 61094-5 is useful as it helps in determining the pressure sensitivity level of working standard microphones.
What’s changed since the last update?
BS EN 61094-5:2016 supersedes BS EN 61094-5:2002 which is withdrawn.
BS EN 61094-5:2016 replaces the first edition published in 2001. BS EN 61094-5:2016 constitutes a technical revision.
BS EN 61094-5:2016 includes the following significant technical changes with respect to the previous edition:
- Details of additional components of uncertainty
- Revised corrections for type WS3 microphones
- Provision for the calibration of microphones in driven shield configuration