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Absolute Threshold of Hearing

The simplest property to exploit is the ATH (Absolute Threshold of Hearing). We simply cannot hear sounds which are too weak. The ATH varies a lot with the frequency of the test sound, which can be seen in figure 1. The curve is approximated from experiments on a number of subjects (see [5]).

Figure 1: The absolute threshold of hearing. The numbers indicate the age of the test subjects.

Bosse Lincoln
Sat Mar 7 16:27:43 PST 1998