Rich,
There us to be a series of specifications for noise equipment in office
environments - not so much what type of equipment but more on the order of a
quiet office environment equipment had to be 50 or 55 dBA, I forget which. Lots
of nasty things to go along with all of that. Printers had impulse noise to
contend with, etc. I don't know if they have, but the trend was to go from
sound pressure measurements to sound power measurements. On the one had it made
it easier for the manufacturer to make repeatable and accurate measurements,
and you didn't need to have a sound anechoic chamber and make parallel piped
measurements at various spots around the equipment.
Been a while since I made those measurements, but Bruel and Kjaer had
lost of papers on the issue.
Gary
-----Original Message-----
From: Warren Birmingham [mailto:[email protected]]
Sent: Monday, September 16, 2002 1:26 PM
To: [email protected]
Cc: [email protected]
Subject: Re: Acousic Noise from ITE
I went to the Global Engineering Website and http://www.global.ihs.com
and found over 300 standards related to the keyword "acoustic" You can
narrow the search.
Warren Birmingham
Epsilon-Mu Consultants
On Monday, Sep 16, 2002, at 08:43 US/Pacific, [email protected]
wrote:
>
> Are there any EU or national (e.g. GS) normative requirements to
> comply with
> any of the following standards or any other acoustic standards for ITE?
>
>> EN27779 Acoustic measurement of airborn noise emitted by computer and
>> business equipment.
>> EN29295 Acoustic measurement of high frequency noise emitted by
>> computer
>> and business equipment.
>> ISO 9296 Acoustics declared noise emission values of emitted by
>> computer
>> and business equipment.
>>
>>
> Richard Woods
> Sensormatic Electronics
> Tyco International
>
>
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