SV - Model 25S -MIRE (Microphone in Real Ear)

SV 102 instrument with SV 25S microphone is a unique system which measures the noise from the headphones or hearing protectors with audio communication facilities when these are used in a real human ear.

Noise measurements in ear canal are important issue as different persons exposed to the same sound, have different sound pressure levels results at their eardrums. Measurement of individual eardrum sound pressure levels is more accurate for estimating the individual risk of hearing damage in the comparison to usage of the mean eardrum sound pressure level of a population.

SV 25S microphone together with SV 102 analyzer equipped with octave analysis provide individual real-world test of the earmuffs noise reduction ratio. To prevent damage of the eardrum and skin of the ear canal microphone probe tube is covered by one time used silica pipe which provides hygienic comfort as well. Applied TEDS technology ensures automatic calibration. Possibility of easy acoustic calibration with a dedicated adapter SA 130 accomplishes exceptional features of SV 102 dual-channel instrument and SV 25S microphone.

Advanced time-history logging for each profile, together with spectra saving and audio events recording provide complete information about measured signal, which is saved in non-volatile, up to 64 MB internal memory. Data files are easily downloaded to any PC using USB interface and SvanPC+ software.