Excitation patterns can be computed from masking data in either direction

Evidence

Thresholds masked by noises can be calculated easily by using main excitation and slope excitation levels. Because the model is based on masking patterns that are transformed to excitation level patterns, it can also be used in the other direction. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1149