Sound system equipment—Part 16: Objective rating of speech intelligibility by speech transmission index

Standard published on 1.11.2017

Sound system equipment - Part 2: Explanation of general terms and calculation methods

Standard published on 31.10.2011

Sound system equipment—Part 21: Acoustical (output-based) measurements

Standard published on 30.5.2025

Sound system equipment - Part 3: Methods of measurement on audio amplifiers

Standard published on 31.10.2011

Sound system equipment - Part 4: Methods of measurement for microphones

Standard published on 31.12.2012

Sound system equipment - Part 5: Methods of measurement for main characteristics of loudspeakers

Standard published on 31.10.2011

Sound system equipment—Part 7Methods of measurement on headphones and earphones

Standard published on 31.12.2013

Sound system equipment - Part 9: Methods of measurement for artificial reverberation, time delay and frequency shift equipment

Standard published on 30.12.2011

Security and sanitary standard for dairy equipment

Standard published on 29.12.1989

General specification for X-ray tubes

Standard published on 5.11.2012