Acoustics. Recommended practice for the design of low-noise machinery and equipment - Planning Ingestion-build-201039 or other gaseous media as

or other gaseous media as they pass through a duct

Gas discharge tubes are extensively used for the protection of telecommunications plants and equipment

Active and adaptive passive noise-control systems are not covered in detail in this International Standard

nor to attempt to cover all the eventualities which may arise in practical circumstances

chemical compositions

Acoustics. Recommended practice for the design of low-noise machinery and equipment - Planning Ingestion-build-201039 or other gaseous media as1 Scope This International Technical Report is an aid to understanding the basic concepts of noise control in machinery and equipment. The recommended practice presented here is intended to assist the designer at any design stage to control the noise of the final product. Methodical development of products was chosen as a basis for the structure of this document (see Clause 4). The list of design rules given in this International Technical Report is