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Content DescriptionThis document describes a method for the objective determination of the audibility of tones in environmental noise. This document is intended to augment the usual method for evaluation on the basis of aural impression, in particular, in cases in which there is no agreement on the degree of the audibility of tones. The method described can be used if the frequency of the tone being evaluated is equal to, or greater than, 50Â Hz. In other cases, if the tone frequency is below 50Â Hz, or if other types of noise (such as screeching) are captured, then this method cannot replace subjective evaluation. NOTEÂ Â Â Â Â The procedure has not been validated below 50Â Hz. The method presented herein can be used in continuous measurement stations that work automatically. About ISOISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better. |
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