Quick Sound Field



The QSF is a nearfield recording environment that allows professional studio microphones and techniques to be successfully used in most ordinary rooms or even outdoors.  And in the best of live rooms, it dramatically improves the sense of intimacy without any adjustment in mic or talent position.  Inside the QSF the mic is recording what the talent is hearing. Adjustments are quick and easy and there is no surprise in playback.  

StudioTraps setup around the mic and talent create a recording space that is sonically decoupled from the room acoustics. Inside the QSF the sonic quality remains consistent from one setup to another without the need for studio notes. The talent is free to move around while recording and no one can hear the change in position. Most important is that what the talent hears inside the QSF is what they hear in the control room.


Keeping the Dream Alive- produced/engineered by Bruce Swedien at West Viking Studio

ASC is proud to announce this incredible video showing off ASC-TubeTrap acoustics. Lead Vocals by Brent Carter. Drums by Josh Garneau. Guitars by Jordan Garneau. Pianos/Keyboards by Mason Embry. Written by Kent and Jordan Garneau and Darren Corlew. Orchestrated by Jeremy Lubbock. Produced/ Engineered by Bruce Swedien. Co-Engineered by Keith Henderson.

Acoustic Signal Control from Talent to Tape

The QSF acoustic technique adds abundant, clean, low-level early reflections to the direct signal at the mic. This creates reverberant-free, very life-like and robust, natural sounding tracks. It is the same “sound fusion” recording technique recommended by F. Alton Everest in his Critical Listening workbook in 1982, who later discovered the QSF in 1991 and endorsed it in his 3rd edition of The Master Handbook of Acoustics in 1993.

Sonic structure inside the QSF is so consistent, you can break the kit down, put it away, and days later you can casually set it back up anywhere and get the same sound you had before.

Quick Sound Field Q & A Forum

Read actual customer questions submitted to us, and the answers that we give:

How It Works

The Quick Sound Field is created by an arrangement of Studio Traps, whose number varies between 4 for vocals and up to 20 for large drum kits. Recording engineer Bruce Swedien uses 14 StudioTraps in his QSF, and he “never leaves home without them."

The minimum to create a Quick Sound Field is two pairs, forming a square around the mic, known as a Starter Set. The dramatic effect of the field created by four StudioTraps is still profound, and must be experienced to be believed.

Quick Sound Field StudioTraps
Starter 4
Standard 8
Enhanced 14
Large 20

The StudioTrap is a two sided acoustic cylinder. The front half is live, treble diffusive and the back half is dead, treble absorptive. The silver dot marks the center of the live, the treble diffusive side. The StudioTrap is a free standing, adjustable height, portable studio acoustic, useful in any room to form gobos or to soften walls and corners.

Originally patented in the early '80s, and ubiquitously also known to engineers, producers and artists as simply, "TubeTraps" (owing to their tall and slender cylindrical shape), many recording engineers as well as numerous custom-designed commercial studios use them to achieve better recording (and mixing) results.

One of the strongest benefits of the Quick Sound Field is it's ability to be moved around into an AttackWall, a legendary producing space. When you're done recording your talent with the QSF, move it into the control room and place it around the speakers, and watch and hear the mic placement in the mix become more clear than it has ever been before, while it simultaneously improves the sound from your speakers.

Summarizing his affection for ASC's products, the famous producer Bruce Swedien wrapped up a recent interview by once again offering his personal endorsement of the Eugene, OR firm's products, "ASC's StudioTraps have been one of my 'secret weapons' all these years. They are an incredible product—durable, portable, extremely flexible and most important, they give me the ability to achieve precise, repeatable sound results with whatever microphones I choose, wherever I work. I haven't done a project without them." These projects include albums by Michael Jackson, Jennifer Lopez, and LL Cool J. 



Why Do You Need a Quick Sound Field?

The QSF is a nearfield acoustic environment that improves the quality of the signal at the mic. It uses StudioTraps to surround and separate both mic and talent from the room. The QSF creates a controlled and very stable acoustic workstation and completes the missing link, the acoustic part of the mic environment in todays digital studio. Sonic structure inside the QSF is so consistent, you can break the kit down, put it away, days later you can casually set it back up anywhere and get the same sound you had before.

The Quick Sound Field is an amazing resource for producers. Ask your talent to step into the opening at the base of the QSF setup and drop your mic into the middle. The mic becomes decoupled from the room. That means that you can finally free your tracks from that close mic, proximity sound effect. Dig out your good figure 8 or omni, don’t be afraid to back it off the talent, up and away into that dense set of early reflections that live, alive and well, inside the QSF.
And then, ask your talent to project, to play into and fill up the QSF space in front of them. They should also feel free to move around, because the sound inside that space doesn’t change at the mic, it just stays there, rock solid. Best of all is that what the talent hears is what it sounds like on playback. And, yes it pans, mixes and runs through the effects rack just like ay other dry signal, except better. Remember: “you gotta hear it to believe it.”


Related Articles And Reviews

Published Articles

Acoustic Sciences Corporation Studio Traps

Reprinted with permission from stereophile.com
Jonathan Scull | Mar 7, 2004 | First Published: Dec 1, 1998

Critical Listerning Skills For Audio Professionals

Audio Perception Unit 5

Who, What, Where, When and Why of the Quick Sound Field

A little back history of the QSF involving Pete Townshend.



Information Coming Soon.



QSF Version # StudioTraps Included Price
Starter Kit  (4) StudioTraps $2,356
Standard Kit  (8) StudioTraps $4,712
Enhanced Kit  (12) StudioTraps $7,068
Large Kit  (20) StudioTraps $11,780





QSF's are upgradeable and can be added-on to at any time.

Upgrade Pricing is $589 per StudioTrap

Custom color fabrics are available for an upcharge