Rippled noise generated by feedback delay produces distinct pitch sensations.

Evidence

A noise with spectral peaks (rippled noise) can be produced by feeding back delayed versions of a noise to the input. … The frequency h of the first spectral peak is determined by the delay time; the level difference, i1L, between maxima and minima in the spectrum is governed by the attenuation. For the spectrum displayed in Fig. 5.17b, a delay of 1 ms and an attenuation of 0.4 dB was chosen. Such noises produce distinct pitch sensations. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 750

Categorization

• DEFINE: Explains how rippled/peaked noise is generated and its spectral parameters.