Zwicker-tone pitch sits exactly 1 Bark above the gap’s lower edge

Evidence

Hence, the pitch of the Zwicker tone elicited by line spectra with spectral gaps of different width corresponds to a critical-band rate 1 Bark above the critical-band rate of the lower edge of the spectral gap. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 782