Amplitude modulation of noise creates pitch with a flat spectrum

Evidence

A weak pitch percept is also generated by modulating sinusoidally the amplitude of white noise (sinusoidally amplitude-modulated noise, or SAM noise). The pitch is perceived at the frequency of amplitude modulation, although the long-term spectrum of sound is flat. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1110

Categorization

• DEFINE: Introduces SAM noise and the striking fact that pitch can arise from temporal (not spectral) structure.
• XREF: connects to: Continuous-spectrum noises can carry pitch perceived from spectral peaks — David Howard, Jamie Angus, coustics and Psychoacoustics, 900