ABSTRACT
One of the problems with making generalizations from work involving the application of sound in the work environment, of which work on auditory warnings is a central example, is that there is no generally agreed taxonomy for sound. This lack of agreement is an indication that the whole area of auditory cognition lags considerably behind that of visual cognition, and still, by and large, represents a void that researchers should be encouraged to fill. Each of the classification systems described in the following text has a different emphasis, but all are useful in thinking about sound in application.
