Practical Aspects of Machine Noise Measurement as Installed
Lewis H. Bell, Harold R. Mull · The Journal of the Acoustical Society of America · 1972
Many industrial manufacturing and processing companies, at the urging of plant engineers and safety directors, are requiring maximum noise level guarantees for purchased machines. Since “as installed” measurements form the basis of acceptance and provide plant engineers the only information available to assess noise impact, many questions are being asked about the value and practical aspects of these measurements. Presented in this paper are some practical aspects that must be considered in (1) choice of instrumentation; (2) treating unwanted reflecting surfaces and background noise; (3) dealing with pure tones and nonsteady noise levels; and (4) assessment of probable range of errors. The discussion will also include some practical applications of “as installed” measurements.