Narrowband noises fluctuate more than wideband stimuli, making them useful for studying fluctuation coding

Evidence

The previous two sections discussed gap detection in steady stimuli, stimuli that do not have large amplitude variations over time. However, many sounds have inherent fluctuations that are also represented by the auditory system. 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: Defines narrowband noise and its fluctuation properties relative to wideband noise.