The dry/wet balance parameter controls the mix ratio between an unprocessed and a processed signal

In audio processing, the unprocessed input is the dry signal and the processed output is the wet signal. The balance (also called mix or blend) is a single parameter (0-1 or 0-100%) that sets the proportion of each in the final output. At 0 only the dry signal is heard; at 1 only the wet signal; at 0.5 equal proportions of both. This abstraction applies universally to delays, reverbs, flangers, distortion, and any effect. In Max, the vs.xfade~ object implements a crossfade between two signals with a single control inlet.

Examples

Echo at balance 0.5 adds delayed signal equally with dry. Reverb in a mix typically 0.15-0.3 (mostly dry). Full wet reverb (balance 1) creates an acousmatic wash. Automating balance from 0 to 0.7 over 4 bars gradually brings in a chorus effect.

Assessment

A performer wants to slowly introduce a chorus effect during a crescendo. Describe how the dry/wet parameter should move and how you would automate this in a Max patch.