Pitch shift magnitude correlates inversely with pitch strength of masked tones

Evidence

The pitch strength of pure tones can be reduced considerably by partial masking sounds. As described in Sect. 5.1.2, with increasing level of the partial masking sound, the magnitude of the pitch shift of pure tones increases. However, at the same time the pitch strength of pure tones decreases. This means that a large value of pitch shift is always correlated with a small pitch strength of the shifted pure tone. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 845