No coin nor oath required. For personal study only.
Work on the five additional standards is proceeding rapidly and ANSI approval of the remaining documents was expected before the end of 1979.
American National Standard S1.30-1979 introduces the remaining six standards which specify various methods for determining the sound power levels of machines and equipment. Guidelines for making decisions concerning the type of test and the specific details for mounting and operating the equipment are provided in the standards. Also covered is a synopsis of each of the six standards which, when approved, will carry the designation ANSI S 1.31-S 1.36.
American National Standard SI.35-1979: Precision Methods for the Determination of Sound Power Levels of Noise Sources in Anechoic and Semi-Anechoic Rooms, contains information on microphone arrays, instrumentation, the installation and operation of a source, procedures for the calculation of the sound power level, directivity index and directivity factor. Measurements made according to this standard must be performed in a laboratory environment. Other standards in the series cover measurement methods in a reverberant environment, measurements in a free field, measurements in a special test room and in situ measurements.
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To provide readers of Applied Ergonomics with a selection of current ergonomics literature likely to be of direct practical value, abstracts are published selected from the collection held at the Ergonomics Information Analysis Centre. These abstracts are classified in a similar manner to the main a