Acoustics. Determination of sound power levels of noise sources using sound intensity - Precision method for measurement by scanning has-hardcopy 2nd and 3rd families described

2nd and 3rd families described in BS EN 437

The requirements do not apply to detailed models intended for use by adults

It specifies rules for the structure and content of collections of product properties and their classification structures

BS EN 10250-2

This International Standard specifies the requirements for ship

Acoustics. Determination of sound power levels of noise sources using sound intensity - Precision method for measurement by scanning has-hardcopy 2nd and 3rd families described1 Scope 1. 1 This part of ISO 9614 specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the sound source(s) of which the sound power level is to be determined. Surface integration of the intensity component normal to the measurement surface is approximated by subdividing the measurement surface into contiguous partial surfaces, and scanning the intensity probe over each