How To Use Audio Mixing CookBook To Create New Sounds #1 - Reversed Swell Delay

I'm turning the Audio Mixing Cookbook into a video series.

Part 1: Reverse Delay Swell for transitions and fantasy sound design. Page 154.

This is one of those techniques that completely changes how a sound feels. Instead of a delay that trails behind the source, you build a swell that pulls the listener forward, into the sound. It's subtle, emotional, and incredibly versatile.

Here's the core idea:

You duplicate your source audio, reverse the duplicate so the tail builds toward the transient, then run it through a delay set around 40% wet with a musical timing or free. A quarter note works well as a starting point but adapt it to your needs and feel. Keep the feedback near zero so you get one clean bloom rather than a repeating tail. After the delay, a reverb with around four seconds of decay opens up the space without washing out the dry signal. Filter the delay to keep mostly mid-range information, bounce the processed signal, reverse it back to normal orientation, and align it so the swell resolves naturally into your original sound.

The result is a lead-in that feels like the music is breathing before it arrives. Works beautifully on voices, texture sounds, melodic elements, anything that needs a smooth magic & emotional effect. I also like to add a doubler after the fact to widen it slightly, and blend the whole thing in parallel so the dry signal stays intact and I keep full control over the balance.

This is exactly the kind of technique I wanted the book to be full of: practical, creative, and adaptable to your own taste. I always leave a note to push you to experiment and make it your own.

The Audio Mixing Cookbook is also back at $9.99 on the Packt website as part of an ongoing campaign, and it hit once again #1 New Release on Amazon! If you've been curious about it, now is a great time to grab it and follow along with the series.

Packt (sale ongoing - $9.99): https://www.packtpub.com/en-us/product/audio-mixing-cookbook-9781836649205

Amazon (20% off): https://www.amazon.com/Audio-Mixing-Cookbook-practical-production/dp/1836649215