Questions & Answers

What is Reverb Pre-Delay?

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asked Apr 14, 2015 in Audio Terms by PreSonuSupt3 (110 points)
retagged Apr 14, 2015 by AlexTinsley
Why do I need to know what reverb pre-delay is? How do I use reverb pre-delay?

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answered Apr 14, 2015 by PreSonuSupt3 (110 points)
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Pre-delay is the time between the end of the initial sound and the beginning of the first reflections being audible. Imagine you’re back on that stage in a large music hall. This time you stand on the very edge of the stage and shout “Hello world!” toward the center of the hall. There will be a brief pause before you hear the first noticeable reflections of your voice, because the sound waves can travel much further before encountering a surface and bouncing back. (There are closer surfaces, of course—notably the floor and the ceiling just in front of the stage—but only a small part of the direct sound will go there, so those reflections will be much less noticeable.) Adjusting the pre-delay parameter on a reverb allows you to change the apparent size of the room without having to change the overall decay time. This will give your mix a little more transparency by leaving some space between the original sound and its reverb.