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Sound editor

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A sound editor is a creative professional responsible for selecting and assembling sound recordings in preparation for the final sound mixing or mastering of a television program or motion picture. Sound editing developed out of the need to fix the incomplete, undramatic, or technically inferior sound recordings of early talkies, and over the decades has become a respected filmmaking craft, with sound editors implementing the aesthetic goals of motion picture sound design.

The Academy of Motion Picture Arts and Sciences recognizes the artistic contribution of exceptional sound editing with the Academy Award for Best Sound Editing.

Contents

Techniques

Equipment

The essential piece of equipment used in modern sound editing is the digital audio workstation, or DAW. A DAW allows sounds, stored as computer files on a host computer, to be placed in timed synchronization with a motion picture, mixed, manipulated, and documented. The standard DAW system in use by the American film industry, as of 2005, is Digidesign Pro Tools, generally running on an Apple Computer host system running Mac OS X. Other systems in use presently are Steinberg Nuendo on Windows XP, as well as Pro Tools running on Windows XP. Other systems historically used for sound editing were:

  • WaveFrame, manufactured by WaveFrame of Emeryville, CA
  • Several DAWs have been manufactured by Fairlight
  • SonicSolutions
  • AMS-Neve Audiofile

The WaveFrame, Fairlights, and Audiofile were of the "integrated" variety of DAW, and required the purchase of expensive prorietary hardware, while the surviving systems, Pro Tools and Nuendo (a successor to Cubase) are of the "host based" variety.

History

Early Talkies

The first sound process to substantially displace silent films in the moviegoing market was the Vitaphone process. Under the Vitaphone process, a microphone recorded the sound performed on set directly to a phonograph master, which made Vitaphone recordings impossible to cut or resynchronize, as later processes would allow. This limited the Vitaphone process to capturing musical acts or one-take action scenes, like Vaudeville routines or other re-creations of stage performances; essentially, scenes that required no editing at all. However, Warner Brothers, even as early as The Jazz Singer, began experimenting with the mixing of multiple phonograph recordings and intercutting between the "master" sync take and coverage of other angles. The original mixing console used to make the master recording of The Jazz Singer, still viewable in the Warner Bros. Studio Museum, has no more than four or five knobs, but each is still visibly labeled with the basic "groups" that a modern sound designer would recognize: "music", "crowd", and so on.

Warner Bros. developed increasingly sophisticated technology to sequence greater numbers of phonograph sound effects to picture using the Vitagraph system, but these were rendered obsolete with the widespread adoption of sound-on-film processes in the early 1930s.

Mechanical Editing

In a sound-on-film process, a microphone captures sound and converts it into a signal that can be photographed on film. Since the recording is imposed linearly on the medium, and the medium is easly cut and glued, sounds recorded can be easily re-sequenced and separated onto separate tracks, allowing more control in mixing. Options expanded further when optical sound recording processes were replaced with magnetic recording in the 1950s. Magnetic recording offered a better signal-to-noise ratio, allowing more tracks to be played simultaneously without increasing noise on the full mix.

The greater number of options available to the editors led to more complex and creative sound tracks, and it was in this period that a set of standard practices became established which continued until the digital era, and many of the notional concepts are still at the core of sound design, computerized or not:

  • Sounds are assembled together onto tracks. Many tracks are mixed together (or "dubbed together") to create a final film.
  • A track will generally contain only one "type" or group of sound. A track that contains dialogue only contains dialogue, a track that contains music should only contain music. Many tracks may carry all the sound for one group.
  • Tracks may be mixed a group at a time, in a process called predubbing. All of the tracks containing dialogue may be mixed at one time, and all of the tracks containing foley may be mixed at another time. In the process of predubbing, many tracks can be mixed into one.
  • Predubs are mixed together to create a final dub. On the occasion of the final dub, final decisions about the balance between different groups of sounds are made.

Historically the Dubbing Mixer (UK) or Re-Recording Mixer (US) was the specialist who mixed all the audio tracks supplied by the Dubbing Editor (with the addition of 'live sounds' such as Foley) in a special Dubbing Suite. As well as mixing, he would introduce equalization, compression and filtered sound effects, etc. while seated at a large console. Often two or three Mixers would sit alongside, each controlling sections of audio, e.g. Dialogue, Music, Effects.

In the era of optical sound tracks, it was difficult to mix more than eight tracks at once without accumulating excessive noise. At the height of magnetic recording, 200 tracks or more could be mixed together, aided by Dolby noise reduction. In the digital era there is no limit. For example, a single predub can exceed a hundred tracks, and the final dub can be the sum of a thousand tracks.

Digital Sound

The mechanical system of sound editing remained unchanged until the early 1990s, when digital audio workstations acquired features sufficient for use in film production, mainly, the ability to synchronize with picture, and the ability to play back many tracks at once with CD-quality fidelity. The quality of 16-bit audio at a 48 kHz sampling rate allowed hundreds of tracks to be mixed together with negligible noise.

The physical manifestation of the work became computerized: sound recordings, and the decisions the editors made in assembling them, were now digitized, and could be versioned, done, undone, and archived instantly and compactly. In the magnetic recording era, sound editors owned trucks to ship their tracks to a mixing stage, and transfers to magnetic film were measured in hundreds of thousands of feet. Once the materials arrived at the stage, a dozen recordists and mix technicians required a half an hour to load the three or four dozen tracks a predub might require. In the digital era, 250 hours of stereo sound, edited and ready to mix, can be transported on a single 160 GB hard drive. As well, this 250 hours of material can be copied in four hours or less, as opposed to the old system, which, predictably, would take 250 hours.

Because of these innovations, sound editors, as of 2005, face the same issues as other computerized, "knowledge-based" professionals, including the loss of work due to outsourcing to cheaper labor markets, and the loss of royalties due to ineffective enforcement of intellectual property rights.

Other Fields

In the production of radio programs and music, persons who manipulate sound recordings are known simply as "editors," in cases where the producers themselves do not perform the task.

See also

Free Sound Effects Library


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Movies, v. 2.0, by MultiMedia

This guide is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.


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