Narrowband noises contain fewer frequencies and show greater amplitude fluctuations than broadband noise.

Evidence

Gap detection experiments that use these sounds help us to understand the representation of slowly fluctuating sounds by the ear. Although there are many types of sounds that contain slow fluctuations, here we discuss a specific class of sound: a narrowband noise. Narrowband noises are filtered versions of white noise — they contain fewer frequencies and also have greater fluctuations. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 981

Categorization

• DEFINE: Introduces narrowband noise as a tool for probing slow-fluctuation representation.