Processing spectral peaks and valleys in separate compression channels erases their level difference

Evidence

Plomp (1988) proposed that the number of channels would interact with the compression imposed on those channels, with a consequence of smoothing the peaks and valleys in a sound spectrum. He argued that if a different compression channel processed a spectral peak and a spectral valley, the relationship between their output levels would be altered from the original relationship. On the other hand, if the same channel processed the peak and valley, the peak and valley would undergo the same amount of amplification. This would preserve the spectral contrast in the stimulus. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1727

Categorization

• DEFINE: Explains the channel-count versus compression interplay that defines why WDRC channel number matters.