Auditory stimuli separate into fine structure and slower envelope

Evidence

The waveform in Figure 5–1 is plotted along with its envelope, which is a representation of the slow temporal variations in the stimulus. This waveform illustrates two aspects of the stimulus that are time dependent: rapid individual pressure variations, commonly called temporal fine structure or the carrier, and slower changes in the pressure variations, referred to as the envelope or the modulator. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 930

Categorization

• DEFINE: Defines temporal fine structure/carrier versus envelope/modulator as the two time-dependent stimulus aspects.