Abstract
Noise generated by plumbing pipes inside a multi-family dwelling can be a source of great annoyance on its residents. Corrective action of such noise begins with identification of the noise source followed by appropriate noise reduction measures. Source identification becomes more challenging when documentation on the plumbing design is missing or when the noise level is so low that it cannot be localized using practical methods. This paper describes a similar problem where low level noise generated by sanitary pipes is heard inside an apartment building. As a localization tool, an acoustic camera utilizing beam-forming technology is used to identify the noise location inside walls between two adjacent apartment units. Findings are visually presented and discussed.
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