ÖNORM EN ISO 3740

This International Standard gives guidance for the use of a series of twelve basic International Standards describing various methods for determining sound power levels from all types of machinery and equipment. It provides guidance on the selection of one or more of these standards which are appropriate to any particular type of sound source, measurement environment and desired accuracy. The guidance given applies only to airborne sound. It is for use in the preparation of noise test codes (see ISO 12001) and also in noise emission testing where no specific noise test code exists. Such standardized noise test codes will recommend the application of the basic International Standard(s) and will give detailed requirements on mounting and operating conditions for a particular family to which the machine under test belongs, in accordance with general principles given in the basic standards. This International Standard is not intended to replace any of the details of, or add any additional requirements to, the individual test methods in the basic standards referred to.