Reported pitch-with-intensity shifts vary widely with method

Evidence

Stevens (1935) made some of the earliest measurements of pitch under conditions of various intensities and demonstrated large changes in pitch with changes in intensity (as high as shifts of 15–20%). Using some modifications to Stevens’ method, Morgan, Garner, and Galambos (1951) found much smaller changes in pitch with intensity than Stevens. They employed a matching procedure in which listeners adjusted the frequency of a test tone so that its pitch matched that of a reference tone. The reference stimulus was always set at 100 dB SPL, and the test tones were set to levels lower than that. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1250

Categorization

• XREF: Connects to the loudness chapters on intensity perception and to measurement methodology debates recurring through the book and in psychophysics generally.