The problem: the reverb you like is the one that hides the words
Solo a vocal with a long, lush reverb and it sounds great. Put it back in the track and the tail from one line is still hanging around when the next line starts. Consonants smear, the words lose their edges, and the vocal sounds further away than you wanted. So you pull the return down until the words come back, and now the reverb is too small to hear.
That trade-off is the whole reason vocal reverbs tend to end up timid. You are not choosing how big the space should be. You are choosing how much mud you can live with.
What a ducking reverb actually does
A ducking reverb turns its own output down while the dry vocal is singing and brings it back up when the vocal stops. During a line, the reverb sits low and the words stay clear. At the end of the line, in the breath, in the gap before the next phrase, the tail blooms up and fills the space.
The important detail is what happens underneath. In FOAM the ducking only turns down the reverb's output. The tail keeps building at full strength the whole time, so when the vocal stops you hear a tail that has been there all along, not one that is just starting from nothing. That is why it sounds like a big room and not like a gate.
Three controls set the behaviour:
- Make Room is how far the reverb drops while the vocal is present, from
0 dB(off) to-36 dB. - Recovery is how fast it comes back once the vocal stops. Short recovery lets the tail bloom into every little gap. Long recovery keeps it tucked down until the end of a phrase.
- Detector listens to FOAM's own input by default, so on a vocal send the vocal ducks its own reverb with no sidechain routing. Switch it to EXT when you want another track to do the pushing.
Why a tempo-locked decay helps a busy mix
Ducking handles the reverb while the singer is on it. The other half of the problem is where the tail goes after the line ends. A tail set in seconds will end wherever it ends, often right on top of the next downbeat or halfway through a fill. In a dense arrangement those overlaps add up.
Set the decay in note values instead and the tail finishes with the music. FOAM's decay runs from 0.2 to 20 seconds in free time, or synced from 1/64 to 4 bars. Pre-delay and recovery can lock to tempo too, so the gap before the reverb, the length of the tail and the speed it swells back in all move with the song. Change the project tempo and the whole reverb follows.
Quick rule: match recovery to the rhythm of the phrasing. If the vocal leaves eighth-note gaps, a recovery of 1/8 lets the reverb breathe in them. If you only want the space at the ends of lines, lengthen it.
Four starting points from the video
FOAM ships with ten factory spaces. A space sets the room - size, bloom, decay, tone, width, pre-delay and the tail shape - and never touches your routing, mix or ducking settings, so you can click through them on a playing vocal without your levels jumping. These four are the ones worth trying first on a lead.
The everyday vocal room
The default space, with decay synced to 1 bar and a 1/16 pre-delay. It is the one to reach for when you want the vocal to sound like it is in a room without anyone noticing a reverb.
Run it on a send with Make Room at the default -12 dB. Verses stay dry and forward, and the room shows up between lines.
Dense and bright for hooks
Bloom all the way up, so the tail is a smooth, thick wash rather than separate reflections, with a 2-bar synced decay. This is the "big reverb, clear vocal" moment at the start of the video.
Good on a chorus lead or a doubled hook. Duck it harder, around -18 dB, push the return louder than feels sensible, and pull Tone down a little if the tail starts competing with the vocal's air.
The wash for throws and outros
The largest space, with a 4-bar synced decay. On its own it would swallow a verse. With deep ducking it stays out of the way until the singer stops, then the whole thing opens up.
Use it for the last word of a section, a single held note, an ad-lib you want to hang in the air, or a breakdown with lots of space around the vocal.
Presence, not space
A short room in free time. It adds a little body and glue to a dry vocal so it sits in the track instead of floating on top of it.
Keep it low enough that you feel it more than hear it, with Make Room at 0 or close to it. On a fast, wordy part it is often the only reverb the lead needs, with one of the bigger spaces on a second send for the ends of lines.
Any of these is a starting point, not a fixed preset. Drag the Size x Bloom pad to change the character of the room while the decay holds its length, then use the four-node tail shaper to set how hard the early reflections hit and when the body of the tail arrives.
Send or insert?
For vocals, a send is the usual home: FOAM outputs reverb only and the dry vocal stays untouched in the mix. On an insert you get a single Mix control that blends dry and wet. Switching between the two never changes the reverb itself, and FOAM adds zero latency either way, so it is safe on a vocal you are tracking through.
A simple vocal setup to try tonight
- Put FOAM on a send and feed it the lead vocal.
- Load Velvet Room. Leave the detector on its default input.
- Bring the return up until the reverb is obviously too loud.
- Set Make Room around
-12 dBand Recovery to1/8. The words come back, the space stays. - Try Deep Fizz on the chorus and Endless Foam on the last line, and adjust Make Room by ear at the ends of phrases.