A just-noticeable frequency shift moves basilar excitation a constant 0.05 mm.

Evidence

This means that a frequency shift of a sinusoidal tone by 2ilf produces a shift of constant distance along the basilar membrane of about 0.05 mm. The shift is independent of the frequency of the tone and constant along the basilar membrane (the small difference between frequency and frequency pitch as described in Sect. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 929

Categorization

• XREF: This constant-distance result is what makes the Weber-like behavior of frequency limens intelligible; ties earlier chapters’ DL findings to place theory.