SV 25S – MIRE dosimeter microphone
The MIRE microphone SV 25S uses a miniature probe at the entrance of the ear canal to measure the noise exposure (noise dose). The microphone works with the SV 102A+ noise dosimeter.
The technique is called the microphone-in-real-ear (MIRE technique). It is applied when the noise source is placed close to the ear. A common application of MIRE is occupational noise measurements in call centers, where the primary sound source is a headset. The SV 25S can be also used to assess noise under headsets and pilots’ helmets.
Following ISO 11904-1:2002, the MIRE requires the use of 1/3 octave analysis with A-weighting correction.
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