ISO 15186-3 is the third part of the multiple series that specifies a sound intensity method to determine the sound reduction index and the element normalized level difference of building elements at low frequencies. This method has significantly better reproducibility in a typical test facility than those of ISO 140-3, ISO 140-10, and ISO 15186-1. The results are more independent of the room dimensions of the laboratory and closer to values that would be measured between rooms of volume greater than 300 m3.
Note: ISO 15186-3 is applicable in the frequency range from 50 Hz to 160 Hz but is mainly intended for the frequency range from 50 Hz to 80 Hz.
ISO 15186-3 on sound insulation in buildings and of building elements using sound intensity is useful for:
Measurement surface is the surface totally enclosing the test specimen on the receiving side, scanned or sampled by the probe during the measurements.
ISO 15186-3 specifies intensity measuring instrumentation that is capable of measuring intensity levels with reference to decibels in one-third-octave bands. ISO 15186-3 helps you to measure the average sound pressure level over the surface of the test specimen in the source room and the average sound intensity level on a measurement surface in the receiving room.
Overall, ISO 15186-3 assists you with measuring the sound reduction of the building and enhancing the quality and durability of the building.
EN ISO 15186-3:2010
ISO 15186-3:2002