Legislative bodies almost all use the A weighted scale. This is usually because they are usually environmental health departments. The A weighted scale is useful as it is a good indication if a noise is annoying (usually at night time) which is their prime consideration. It is also available on most meters!. Increasingly they are looking at introducing C weighted measurements as noise from Air Conditioning systems/wind farms etc becomes a problem with their very low frequency content. One of the issues with local environmental officers is the wide range of subjects they need to cover, mainly health related such as food preperation. Noise pollution is only a very small part of what they do and few would claim to be experts in the field. Jon Burton Research Student MSc University of York. [email protected]
> On 23 Apr 2015, at 08:16, Pierre Alexandre Tremblay <[email protected]> > wrote: > > I think what people mean when legislation measuring at 100 dB-A is an > oxymoron. dBA was meant to mimic the equal-loudness curve at low level of > listening (around 40 dB spl @ 1k) and is absolutely not representative of the > relatively linear curve around 100 dB SPL @1k. > > The wikipedia articles on psychoacoustics are quite good. > http://en.wikipedia.org/wiki/Equal-loudness_contour > > http://en.wikipedia.org/wiki/A-weighting > > > _______________________________________________ > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit > account or options, view archives and so on. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20150424/43cd6ad2/attachment.html> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
