Say “recording studio” and most people picture a mixing desk. The desk matters, but what makes a studio a studio is how its space is divided. Each room has a different job, and that split is what lets a band play loudly in one place while somebody listens carefully in another.
This post walks through the rooms one at a time, using Wikipedia’s article on recording studios for the layout and a Sound On Sound piece for how small studios cope when there is only one room.
The short definition
Wikipedia describes a recording studio as a specialized facility for recording and mixing instrumental or vocal performances, spoken words and other sounds. It can be a small in-home project studio, big enough for a single singer-guitarist, or a large building with room for a full orchestra of 100 or more musicians. Ideally, the article says, both the recording space and the listening space are designed by an acoustician or audio engineer.
Wikipedia says studios generally have three or more rooms. Here they are.
The live room
The live room, which Wikipedia also calls simply the studio, is where instrumentalists and singers perform. It is equipped with microphones and stands. Not every sound has to go through a microphone, though: Wikipedia says electric and electronic instruments can also be connected to the console directly, or through DI units.
Image: A Hammond organ at RCA Studio B by Cliff, CC BY 2.0, via Wikimedia Commons.
Large studios often keep big, heavy instruments in the live room, such as a grand piano or a Hammond organ, because they are awkward or impossible to hire for a single session. Wikipedia adds the catch: instruments cost the studio money, since pianos have to be tuned and everything has to be maintained. Some smaller studios have no instruments at all and expect you to bring your own.
The control room
The control room, sometimes called the production or recording room, is where engineers and producers mix the microphone and instrument signals on a mixing console. From there they record the playing, onto tape until the 1980s and early 1990s and onto hard disc after that, according to Wikipedia. They listen back on monitor speakers or headphones and shape the sound with the console and effects units.
Image: A mixing console in front of the track room window, Studio C, Ardent Studios by Katie from Memphis, TN, USA, CC BY-SA 2.0, via Wikimedia Commons.
Notice the window in the photo. Wikipedia points out that even though isolation is a key goal, musicians, engineers and producers still need to see each other to catch cue gestures and a bandleader’s conducting, so the live room, booths and control room normally have windows between them.
Isolation booths and vocal booths
Wikipedia describes isolation booths as enclosed or partly enclosed areas, or small separate rooms with doors. They serve two purposes. One is to keep loud instruments, such as drums or guitar amplifiers, from being heard by the microphones capturing everything else. The other is the opposite: to give a drier room for vocals or quieter acoustic instruments such as an acoustic guitar or fiddle. Vocal booths are designed the same way for singers.
The machine room
The least glamorous room is the machine room. Wikipedia says it holds noisier equipment, such as racks of fan-cooled computers, tape recorders and power amplifiers, so that the noise does not interfere with recording or listening. If you have ever tried to record a quiet vocal next to a laptop fan, you can see the logic. (That last sentence is my own observation, not from the article.)
Why the walls matter as much as the gear
The same article’s acoustics section covers two different jobs. Acoustic treatment uses absorbing and diffusing materials on a room’s surfaces to control how sound behaves inside it. Soundproofing provides isolation between rooms and stops sound getting in or out of the property. A studio in a city has to be soundproofed on its outer shell, the article notes, so that street noise is not picked up by the microphones. The two jobs are easy to confuse, and the series post Acoustic Treatment vs Soundproofing explains the difference in more detail.
What happens in a one-room studio
Most home studios have none of the rooms above, just one. Sound On Sound’s editorial team described the trade-off in a January 2021 piece: most home studios are one-room affairs, and without a separate live room you have to balance accurate monitoring against a good-sounding space for tracking. In a small space, they say, that usually means keeping the room fairly dry and using software reverb to add depth, or setting up some cheap reflective material temporarily while tracking. So the same four jobs still exist in a small studio, they are just done by one room, a set of curtains and some careful habits.
That is the useful way to read any studio, large or small: ask where the performing happens, where the listening happens, where the loud things go and where the noisy machines live.
Sources
- Wikipedia: Recording studio
- Sound On Sound: 21 Ways To Improve Your Studio In 2021 (SOS Team, January 2021)