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The use of a single valued quantity, such as the equivalent continuous A weighted sound pressure level or its :1 rivatives, as the noise exposure term in community noise annoyance prediction criteria has been forcefully advocated (l) (2)(3).However, there is a growing body of evidence (10(5) (6) to support the assertion that such a simple energy cremation madelis insufficient to justify the faith that is being placed upon it.Factors against its promulgation are:(i) no account is taken of possible differences in the annoying inducing potential of different sources (ii) no separate account is taken of the absolute levels of the sources which contribute to the total sound level.
Rice et al. (Wed,) studied this question.