Low-pass noise is heard at a pitch matching its cut-off frequency

Evidence

The pitch of low-pass noise corresponds to its cut-off frequency. To demonstrate this effect, you hear low-pass noises with cut-off frequencies of 350 Hz, 750 Hz and 1800 Hz. After each low-pass noise, a pure tone with the cut-off frequency is played. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 3281