Abstract
By using the parameters for the ear and the equations for a “communication theory” model of the behavior of the ear, a family of curves can be set up for the performance of the ear under masking conditions, such as those prevalent in automotive vehicles. From the ability of the ear to recognize sounds in noise, estimates can be made for the conditions under which sirens and communications will be audible within motor vehicles moving in traffic, and some estimate can also be made as to their potential for attracting notice. These quantities may be read off by graphic techniques. Examples of their use are given.
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