Reverb
The persistence of sound in a space after the source stops, simulated digitally to add depth and a sense of place to recordings.
01 · Define
Say it without the jargon.
One-sentence definition
The persistence of sound in a space after the source stops, simulated digitally to add depth and a sense of place to recordings.
02 · Understand
How it works in music
Plain definition
Reverb is what happens when sound bounces off the walls, ceiling, and floor of a real space and reaches your ears after the original source has stopped. In a tiled bathroom, that tail is bright and long. In a recording booth, it's nearly gone. In a cathedral, it can last six seconds and color every note. Recording engineers use reverb to put a dry studio sound into a believable space, or to invent a space that doesn't exist.
How it works
The main categories: room reverb is short and intimate, hall reverb is long and dramatic, plate reverb is dense and metallic (originally generated by a literal vibrating steel plate), spring reverb is twangy and bouncy (the surf guitar sound), and convolution reverb captures the acoustic fingerprint of a real space via an impulse response. Each has a use: a snare drum often gets short plate; a lead vocal often gets a longer hall or chamber.
Use it in practice
Three knobs matter most: pre-delay (how long before the reverb starts, which separates the source from its tail), decay (how long the reverb lasts), and wet/dry mix (how much reverb vs source). On vocals, a 30–60 ms pre-delay keeps articulation crisp before the wash sets in. On snare, a 2–3 second hall under a tight gate can sound enormous without losing the attack.
03 · Use it
Hear it. Try it. Keep it.
Turn the definition into one observation, one controlled move, and one memory line you can carry into the next session.
Hear · Notice
Separate the dry source, the first reflections, and the fading tail. Each tells you something different about the imagined space.
Try · One move
Start dry. Add one reverb, set its decay, then raise pre-delay until the source feels clear in front of the space.
Keep · Memory line
Pre-delay creates separation; decay describes the tail; wet level sets the distance.
One example can demonstrate understanding; it cannot certify hearing, technique, authorship, equipment safety, voice health, or professional readiness.
04 · Continue
Practise “Reverb” in Main Act.
Open the related school to practise this idea, or add it to a Main Act plan.