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DD IEC/TS 61094-7:2006

Current

Current

The latest, up-to-date edition.

Measurement microphones Values for the difference between free-field and pressure sensitivity levels of laboratory standard microphones

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-07-2006

€140.23
Excluding VAT

1 Scope
2 Normative references
3 Terms and definitions
4 Reference environmental conditions
5 Background
6 Difference values of free-field and pressure
  sensitivity levels
  6.1 General
  6.2 Data sources
  6.3 Expression for the difference between free-field
      and pressure sensitivity levels
  6.4 Uncertainty on the calculated free-field
      sensitivity level
Annex A (informative) - Source data
Annex B (informative) - Acknowledgements
Annex C (informative) - Historical data

Provides a polynomial function derived from a least square fit to data from several laboratories, for the differences between free-field and pressure sensitivity levels of laboratory standard microphones as specified in IEC 61094-1.

Committee
EPL/29
DevelopmentNote
Supersedes 02/202625 DC (07/2006) Supersedes BS 5941(1980). (03/2010)
DocumentType
Standard
Pages
12
PublisherName
British Standards Institution
Status
Current
Supersedes

This part of IEC 61094 - gives a polynomial function derived from a least square fit to data from several laboratories, for the differences between free field and pressure sensitivity levels of laboratory standard microphones as specified in IEC 61094-1, - enables determination of the free field sensitivity level of a laboratory standard microphone for zero degrees incidence in air by adding values of these differences to the pressure sensitivity level, - gives tabulated values for the polynomial function for a range of frequency and temperature, - is applicable when a suitable free field calibration is not available.

Standards Relationship
IEC TS 61094-7:2006 Identical

IEC 61094-1:2000 Measurement microphones - Part 1: Specifications for laboratory standard microphones
IEC 61094-3:2016 Electroacoustics - Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique
IEC 61094-2:2009 Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique

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