| Reference | Designation/Description | Accredited assay |
Reference standards |
Product/ Material |
Comments (Administrator) |
|---|---|---|---|---|---|
| ACL.17.02 | Determination of sound power levels of noise sources using sound pressure - Engineering Method | ISO 3744:2010; Annex III of Portuguese Decree-Law 221/2006 | Noise of machinery and equipment | ||
| ACL.19.02 | Determination of the sound power level of noise using sound pressure - Survey method using an eveloping measurement surface over a reflecting plane | ISO 3746:2010 | Noise of machinery and equipment | ||
| ACL.23 | Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering/survey methods for use in situ in a reverberant environment | ISO 3747:2010 | Noise of machinery and equipment | ||
| ACL.24 | Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels | ISO 6926:2016, ISO 6926:2016/AMD1:2020 | Reference sound sources | ||
| ACL.28 | Test methods for the qualification of free-field environments | Annex A of ISO 3745:2012 + Amd1:2017; ISO 26101-1:2021 | Anechoic and hemi-anechoic rooms | ||
| ACL.28.01 | Generic procedure for evaluating the directivity of a sound source | Annex B of ISO 26101-1:2021 | Test sound sources | ||
| ACL.29 | Sound-scattering properties of surfaces – Measurement of the random-incidence scattering coefficient in a reverberation room | ISO 17497-1:2004 + Amd1:2014 | Building elements | ||
| ACL.30 | Sound-scattering properties of surfaces – Measurement of the directional diffusion coefficient in a free field | ISO 17497-2:2012 | Building elements | ||
| ACL.31 | Measurement of the impulse response | ISO 18233:2006 | Building elements | ||
| ACL.32 | Methods for calculating loudness – Part 1: Zwicker method | ISO 532-1:2017 | Noise sources | ||
| ACL.33 | Psychoacoustic metrics for ITT equipment (tonality) | ECMA-418 | Noise sources |