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Formulae for calculating the psychoacoustical excitation level of aural difference tones measured by the cancellation method.

Data from the literature on the (f2‐f1)‐ and (2f1‐f2)‐ difference tones produced in the human ear and measured with the method of cancellation are averaged. They are used to formulate analytical equations with which the level of the two difference tones can be calculated and entered in models using masking or psychoacoustical excitation patterns.