ISO/DIS 13347-2

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ISO/DIS 13347-2 is a Draft International Standard focusing on fans and specifically methods for determining fan sound power levels under standardized laboratory conditions using a reverberant room method. It's part of a larger series (ISO 13347) that also includes methods like enveloping surface and sound intensity methods. This specific part, 13347-2, outlines the procedures for measuring sound power levels in a reverberant room, which is a controlled acoustic environment.