Moshe, There are several noise regulations in Europe that may be relevant, but most are dealing with ambient noise levels (all sources). There is very little that deals with the issue of product noise emission levels. This tends to be a competitive issue for many manufacturers. The one guideline document that may help was issued by a Swedish agency STATSKONTORET; the standard is STK 26; the second edition was issued in 1989; not sure about anything more recent. This document include noise emission guidelines for ITE. (I assume that is the area of interest). Another source for more recent information on ITE would be ECMA.
Regards, Lyle Luttrell TUV Product Service ------------- Original Text From: [email protected], on 4/17/97 11:48 PM: Hello everyone, thanks for pointing me to standards in this area. I did some reading and here is a summary: ISO 7779 Acoustics-measurement of airborne noise emitted by computer & business equipment.: deals with HOW TO MEASURE (free field, reverberation room, sound pressure at the operator & bystander position etc. The main idea is: define "how to measure" so that different products may be COMPARED. This is a relatively new standard (1996) ISO 3740-3746 (seven documents) Acoustic determination of sound power levels of noise sources-guidelines: this is also a "HOW TO MEASURE". it is older (1980) ANSI S1.13 (ASA 118-1995) This is the american new standard of HOW TO MEASURE. It seems the americans would rather use sound pressure than sound power. I DID NOT FIND ANY LIMITS IN THESE STANDARDS !!!! I know offices have some 55dbA requirement (pressure level) but I did not find the source for that. I know there are also safety related requirements (I think the IEC1010 states one) which are much higher than the office requirement (which is based on noise not interfering with office work and human concentration) ------------------------------------- Name: moshe valdman E-mail: [email protected] Phone: 052-941200, 03-5496369 List-Post: [email protected] Date: 17/04/97 Time: 23:48:06 -------------------------------------
