#2797931
Fuaimíocht — Caillteanas ionsá ciúnadóirí duchtaithe gan sruth a thomhas — Modh suirbhé saotharlainne (ISO 11691:1995)
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995)
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#2225040
Tabhair tuairisc ar a mhinice a athbhreithnítear an mhodheolaíocht, e.g. deighilt a leasú, modh suirbhéireachta in aghaidh na roinne, in aghaidh na hathróige, etc.
Describe the frequency of the methodology review, e.g. revision of segmentation, survey method per segment, per variable, etc.
#2797910
Fuaimíocht — Leibhéil cumhachta fuaime agus leibhéil fuinnimh fuaime foinsí torainn a chinneadh agus brú fuaime á úsáid — Modh suirbhé agus dromchla tomhais cumhdaithe á úsáid thar phlána frithchaiteach (ISO 3746:2010)
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:2010)