Glossary
Standards and regulations
ISO 1996
Also known as ISO 1996, environmental noise standard.
The ISO 1996 series specifies methods for describing, measuring and assessing environmental noise. It is widely used for community-noise impact assessments of industrial facilities, planning consents and post-installation noise verification.
Why it matters for industrial sonic-horn installations
A sonic horn installation at a cement plant, WtE facility or refinery can have audible impact at the site boundary, particularly during initial commissioning or with poor enclosure design. Planning consents and site environmental permits typically reference ISO 1996 methods for community-noise compliance assessment.
Related terms
Related terms
- Sound pressure levelSPL is the logarithmic measure of sound pressure in decibels relative to a 20 µPa reference. Industrial sonic horns operate at 140–180 dB SPL.
- DecibelThe decibel is a logarithmic ratio used to express sound pressure, sound intensity and sound power. A 10 dB rise represents a tenfold rise in intensity.
- Sound-attenuation enclosure (sonic horn)A sound-attenuation enclosure surrounds the sonic horn to reduce SPL at the operator station. Typical 10–25 dB reduction; required where horn proximity exceeds OSHA / EU action levels.