Norm

NEN-EN-ISO 3743-2:2009 en

Akoestiek - Bepaling van geluidvermogenniveaus van geluidbronnen gebaseerd op de meting van de geluiddruk - Praktijkmethoden voor kleine, verplaatsbare bronnen in galmvelden - Deel 2: Methoden voor speciale nagalmkamers

106,87

Over deze norm

Status Definitief
Aantal pagina's 20
Commissie Akoestiek
Gepubliceerd op 01-08-2009
Taal Engels
This part of IS0 3743 specifies a relatively simple engineering method for determining the sound power levels of small, movable noise sources. The measurements are carried out when the source is installed in a specially designed room having a specified reverberation time over the frequency range of interest. The A-weighted sound power level of the source under test is determined from a single Aweighted sound pressure level measurement at each microphone position, rather than from a summation of octave-band levels. This direct method eliminates the need for a reference sound source, but requires the use of a special reverberation test room. The direct method is based on the premise that the sound pressure level, averaged in space and time in the test room, can be used to determine the sound power level emitted by the source. The properties of the special reverberation test room are chosen so that the room's influence on the sound power output of the equipment under test is small. The number of microphone positions and source locations required in the test room are specified. Guidelines for the design of special reverberation rooms are given in annex B.

Details

ICS-code 17.140.01
Nederlandse titel Akoestiek - Bepaling van geluidvermogenniveaus van geluidbronnen gebaseerd op de meting van de geluiddruk - Praktijkmethoden voor kleine, verplaatsbare bronnen in galmvelden - Deel 2: Methoden voor speciale nagalmkamers
Engelse titel Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for small, movable sources in reverberant fields - Part 2: Methods for special reverberation test rooms
Vervangt
Normatieve verwijzingen
  • 98/37/EG, Machines

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