Techniques for Analysis of Noise Sources in Printing Equipment.

Noise produced by printing equipment is a major problem currently facing publishers and equipment manufacturers alike. This type of noise can be reduced most effectively by a combination of reactive measures, such as enclosure or acoustic treatment, and active approaches designed to eliminate the sources of noise. The effective abatement of noise at the source requires a well-developed methodology to (to identify the significant noise generators and to evaluate the effectiveness of source noise reduction concepts. This methodology, as applied to newspaper folder noise, is discussed. Instrumentation and techniques for establishing and analyzing the various noise sources are described. Analyses of noise data in the frequency and time domains are compared, illustrated by sample results from current work.