AudioScope
What Does a 1.5 ms Delay Do to Sound?
Hear how a 1.5 millisecond delayed copy changes the texture of the original sound.
Start at a comfortable volume and listen to both samples before opening the explanation.
What changed in the sound?
In A, hear the original sound. In B, AudioScope adds a copy delayed by 1.5 milliseconds. Where the signals line up, they reinforce each other. Where they are out of phase, they partially cancel. This repeating pattern of peaks and dips is called comb filtering.
The two samples are matched in average digital level. Try changing the delay in a mix to hear the peaks and dips shift.