DIN EN ISO 3743-1 : 2011 Title: Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for small, movable sources in reverberant fields - Part 1: Comparison method for a hard-walled test room (ISO 3743-1:2010) Year: 2011 Publisher: DIN Media GmbH Availability: Within 1-2 working days