The brain organizes simultaneous sound events into separate auditory streams via auditory scene analysis.

Evidence

As an example of the perceptual organization of auditory events, we will inspect the formation of a melodic line, which is an important structural factor in Western musical tradition. If we listen to sound events placed properly both in time and frequency, depending on the case, we will perceive one or more auditory streams (Bregman, 1990; McAdams and Bregman, 1979). A broader term for the perceptual organization of sound is auditory scene analysis (Bregman, 1990). — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1334

Categorization

• DEFINE: Introduces auditory streaming and auditory scene analysis, core concepts for understanding how listeners parse complex acoustic scenes.
• XREF: Connects to Bregman’s Auditory Scene Analysis, foundational for computational auditory scene analysis and hearing-aid design.