Звукозаписывающая студия: устройство и функции

Facility for sound recording

A recording studio is a specialized facility for recording and mixing of instrumental or vocal musical performances, spoken words, and other sounds. They range in size from a small in home project studio large enough to record a single singer guitarist, to a large building with space for a full orchestra of 100 or more musicians. Ideally, both the recording and monitoring (listening and mixing) spaces are specially designed by an acoustician or audio engineer to achieve optimum acoustic properties (acoustic isolation or diffusion or absorption of reflected sound echoes that could otherwise interfere with the sound heard by the listener). Recording studios may be used to record singers, instrumental musicians (e. g., electric guitar, piano, saxophone, or ensembles such as orchestras), voice over artists for advertisements or dialogue replacement in film, television, or animation, Foley, or to record their accompanying musical soundtracks. The typical recording studio consists of a room called the "studio" or "live room" equipped with microphones and mic stands, where instrumentalists and vocalists perform; and the "control room", where audio engineers, sometimes with record producers, as well, operate professional audio mixing consoles, effects units, or computers with specialized software suites to mix, manipulate (e. g., by adjusting the equalization and adding effects) and route the sound for analog or digital recording. The engineers and producers listen to the live music and the recorded "tracks" on high quality monitor speakers or headphones. Often, there will be smaller rooms called isolation booths to accommodate loud instruments such as drums or electric guitar amplifiers and speakers, to keep these sounds from being audible to the microphones that are capturing the sounds from other instruments or voices, or to provide "drier" rooms for recording vocals or quieter acoustic instruments such as an acoustic guitar or a fiddle. Major recording studios typically have a range of large, heavy, and hard to transport instruments and music equipment in the studio, such as a grand piano, Hammond organ, electric piano, harp, and drums.

An isolation booth is either a partially enclosed area in the live room or a completely separate small room built adjacent to the live room that is both soundproofed to keep out external sounds and keep in the internal sounds. Like all the other recording rooms in sound industry, isolation booths designed for having a lesser amount of diffused reflections from walls to make a good sounding room. A drummer, vocalist, or guitar speaker cabinet, along with microphones, is acoustically isolated in the isolation booth. A typical professional recording studio today has a control room, a large live room, and one or more small isolation booths. All rooms are soundproofed by varying methods, including but not limited to, double layer 5/8" sheetrock with the seams offset from layer to layer on both sides of the wall that is filled with foam, batten insulation, a double wall, which is an insulated wall built next to another insulated wall with an air gap in between, by adding foam to the interior walls and corners, and by using two panes of thick glass with an air gap between them. The surface densities of common building materials determines the transmission loss of various frequencies through materials. Thomas A. Watson invented, but did not patent, the soundproof booth for use in demonstrating the telephone with Alexander Graham Bell in 1877. There are variations of the same concept, including a portable standalone isolation booth and a guitar speaker isolation cabinet. A gobo panel achieves the same effect to a much more moderate extent; for example, a drum kit that is too loud in the live room or on stage can have acrylic glass see through gobo panels placed around it to deflect the sound and keep it from bleeding into the other microphones, allowing better independent control of each instrument channel at the mixing console. In animation, vocal performances are normally recorded in individual sessions, and the actors have to imagine (with the help of the director or a reader) they are involved in dialogue. Animated films often evolve rapidly during both development and production, so keeping vocal tracks from bleeding into each other is essential to preserving the ability to fine tune lines up to the last minute. Sometimes, if the rapport between the lead actors is strong enough and the animation studio can afford it, the producers may use a recording studio configured with multiple isolation booths in which the actors can see each another and the director. This enables the actors to react to one another in real time as if they were on a regular stage or film set.

In the era of acoustical recordings (prior to the introduction of microphones, electrical recording and amplification), the earliest recording studios were very basic facilities, being essentially soundproof rooms that isolated the performers from outside noise. During this era it was not uncommon for recordings to be made in any available location, such as a local ballroom, using portable acoustic recording equipment. In this period, master recordings were made by cutting a rotating cylinder (later disc) made from wax. Performers were typically grouped around a large acoustic horn (an enlarged version of the familiar gramophone horn). The acoustic energy from the voices or instruments was channeled through the horn to a diaphragm to a mechanical cutting lathe, which inscribed the signal as a modulated groove directly onto the surface of the master.

Electrical recording was common by the early 1930s, and mastering lathes were electrically powered, but master recordings still had to be cut into a disc, by now a lacquer, also known as an Acetate disc. In line with the prevailing musical trends, studios in this period were primarily designed for the live recording of symphony orchestras and other large instrumental ensembles. Engineers soon found that large, reverberant spaces like concert halls created a vibrant acoustic signature as the natural reverb enhanced the sound of the recording. In this period large, acoustically live halls were favored, rather than the acoustically dead booths and studio rooms that became common after the 1960s. Because of the limits of the recording technology, which did not allow for multitrack recording techniques, studios of the mid 20th century were designed around the concept of grouping musicians (e. g., the rhythm section or a horn section) and singers (e. g., a group of backup singers), rather than separating them, and placing the performers and the microphones strategically to capture the complex acoustic and harmonic interplay that emerged during the performance. In the 2000s, modern sound stages still sometimes use this approach for large film scoring projects that use large orchestras.

Because of their superb acoustics, many of the larger studios were converted churches. Examples include George Martin's AIR Studios in London, Columbia Records 30th Street Studio in New York City, and Pythian Temple studio in New York. Facilities like the Columbia Records 30th Street Studio in New York and Abbey Road Studios in London were renowned for their identifiable sound—which was (and still is) easily identifiable by audio professionals—and for the skill of their staff engineers. As the need to transfer audio material between different studios grew, there was an increasing demand for standardization in studio design across the recording industry, and Westlake Recording Studios in West Hollywood was highly influential in the 1970s in the development of standardized acoustic design. In New York City, Columbia Records had some of the most highly respected sound recording studios, including the 30th Street Studio at 207 East 30th Street, the CBS Studio Building at 49 East 52nd Street, Liederkranz Hall at 111 East 58th Street between Park and Lexington Avenues (a building built by and formerly belonging to a German cultural and musical society, The Liederkranz Club and Society), and one of their earliest recording studios, Studio A at 799 Seventh Avenue. Broadcast studios also use many of the same principles such as sound isolation, with adaptations suited to the live on air nature of their use. Such equipment would commonly include a telephone hybrid for putting telephone calls on the air, a POTS codec for receiving remote broadcasts, a dead air alarm for detecting unexpected silence, and a broadcast delay for dropping anything from coughs to profanity. In the U. S., stations licensed by the Federal Communications Commission (FCC) also must have an Emergency Alert System decoder (typically in the studio), and in the case of full power stations, an encoder that can interrupt programming on all channels which a station transmits to broadcast urgent warnings. Computers are used for playing ads, jingles, bumpers, soundbites, phone calls, sound effects, traffic and weather reports, and now are able to perform full broadcast automation when no staff are present. Digital mixing consoles can be interconnected via audio over Ethernet. Network connections allow remote access, so that DJs can do shows from a home studio via the Internet. Additional outside audio connections are required for the studio/transmitter link for over the air stations, satellite dishes for sending and receiving shows, and for webcasting or podcasting.