This noise manual contains informative material regarding noise in general and control valve noise in particular. Noise prediction methods used by Masoneilan for aerodynamic noise and hydrodynamic noise are based on the latest publications of the Instrument Society of America (ISA) and the International Electrotechnical Commission (IEC), see refer- ence Section 6.0. The calculations required by these methods are quite complex, and the solution of the equations is best accomplished by computer. For this purpose, the Masoneilan valve sizing and selection computer program ValSpeQ® provides a convenient and efficient working tool to perform these calculations.
MASONEILAN (2005) Noise Control Manual