ISO140-10

A method for measuring the airborne sound insulation of building elements using the “in situ” approach is outlined in ISO 140-10. This standard provides useful information for evaluating how well a construction assembly reduces sound transmission in real-life scenarios, with a special focus on evaluating the sound insulation performance of partitions under real-world building conditions.

Use of ISO140-10:

Architects, engineers, and acousticians use acoustic performance evaluation to assess how well building components, like floors and walls, insulate against ambient sound.
Regulatory Compliance: Verifies that building components adhere to regional sound insulation building codes and regulations.
Quality control: Assists in confirming that building techniques and supplies function as planned in practical settings.

Method of ISO140-10:

Test Configuration:

The test is carried out in an actual building or a controlled setting that closely resembles real-world circumstances.
It involves two adjacent spaces that are divided by the building element under test, such as a partition or wall.


Method of Measurement:

Sound Generation: In the source room, a sound source (such as a loudspeaker) produces a controlled sound signal, usually using broadband noise or pink noise.
Data collection: To measure sound levels, microphones are positioned in both the source and receiving rooms. The sound pressure levels in both areas are recorded simultaneously.
Sound Level Comparison: To calculate the sound transmission loss, the sound levels in the source and receiving rooms are compared.

Analyzing Data:

Decibels (dB), which measure how well a building element reduces sound transmission, are used to express the airborne sound insulation.
Performance across a range of sound frequencies can be displayed using a frequency-dependent format.

In order to improve acoustic comfort and privacy in residential, commercial, and institutional buildings, ISO 140-10 is essential for making sure that building components offer sufficient sound insulation under actual conditions.