Raising low-pass noise level measurably raises its perceived pitch

Evidence

When increasing the level of low-pass noise from 50 to 80 dB SPL at 250 Hz cutoff frequency, the frequency of a pure tone matched in pitch increases from 260 Hz to 285 Hz. At 1000 Hz cutoff frequency of the low-pass noise the corresponding shift is from 1022 Hz to 1073 Hz. Since with increasing level the upper slope of the masking pattern for low-pass noise becomes flatter, the increase in pitch of low-pass noise with level can be described when assuming that the pitch corresponds to the 3 dB down point of the masking pattern. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 844

Categorization

• XREF: connects to: Continuous-spectrum noises can carry pitch perceived from spectral peaks — David Howard, Jamie Angus, coustics and Psychoacoustics, 900