When cooled, the magnetic information is read from the disk by laser. A laser heats an area of magnetic disk which is then written to by a magnetic head. DCC was discontinued in 1996.ĥ) MiniDisc (MD) : Uses magnetic disk technology, rather than tape. Introduced in 1987, and widely used in gathering sound effects, for news gathering, and for playback of music.Ĥ) DCC (Digital Compact Cassette) Rival to DAT which also plays standard audio cassettes. There are two formats of recording: Type 1 (16 bit) Type 2 (20 bit) at two sample rates (44.1kHz and 48 kHz) onto standard SVHS video tapes.ģ) DAT (Digital Audio Tape) Cassette-like system which has much higher quality than standard audio cassettes. 16 bit, 44.1 or 48kHz sampling rate.Ģ) ADAT (Alesis Digital Audio Tape) Digital 8 track multitrack recording format introduced in 1991. Not playable in domestic CD decks, so more suitable for computer-based playback.ġ) ADAM : (Akai Digital Audio Multitrack). The recordable disks were available in two types ĬD-R - Recordable Compact Disc - Data was written to it, then it was 'Finalised' which made it playable in any standard-compliant CD player, including domestic decks.ĬD-RW - Rewritable Compact Disc - Data could be re-written many times.
the Akai S1000) were used on bigger shows. However, due to the ease of playback control, and ability to easily (and reliably) re-record and edit the media, MiniDisk was a better replacement for reel-to-reel tape playback in many venues, although digital samplers (e.g.
#SCRIPT CONTROL LOOP MEDIA SHOUT 4 PC#
When Multimedia PC computers became affordable, it became possible for many productions to use CD playback. Initially the technology to create CDs from recordable media did not exist, but as it was introduced, long-running shows such as the Woman In Black moved over to CD playback, from the original reel-to-reel. Provides a high quality source of music, sound effects etc. 'LX Off Comms' when leaving the operating position).ĭigital sound storage medium introduced in 1982. Īlso called 'Comms' short for Communications - the same phrases can be used (e.g. Many headset systems have multiple channels, enabling different sub-groups to communicate separately.
There are interfaces between wired and wireless versions enabling both to be part of the same system. However, stage management (and any other crew who move around) often wear wireless versions, often known as radio cans. In the USA, ClearCom is commonly used.Īs many of the technical operators are tied to expensive pieces of equipment, headsets are often wired. "Electrics on cans", "Going off cans", "Quiet on cans!").Ī commonly used system in the UK is produced by Canford Audio under the TecPro brand. Some control desks permit the use of absolute addresses, where the first address of the 2nd Universe, normally called 2/001, is numbered 513.ġ) Headset earpiece, microphone and beltpack used for communication and co-ordination of technical departments during a performance. By default, Universe 1 is used, so DMX address 120 on Universe 1 is known as 1/120. In larger systems, where more than 512 channels are required, each block of 512 addresses is called a Universe.
#SCRIPT CONTROL LOOP MEDIA SHOUT 4 FULL#
The address is either set via pushbuttons (up / down) to get to the correct channel, via a menu screen, via small rotary selectors where you can set each digit of the address, or via DIP switches where each switch represents a binary digit which combine to give the full address. Moving lights requiring 16 DMX channels each might be addressed to 120, 137, 154 etc. A moving light requires many DMX channels.įor example, in a situation where you have three 6-way dimmer racks, the first should be addressed to 1, the second to 7 and the third to 13. A dimmer rack requires 1 DMX channel per dimmer. (LIghting) Each item of equipment controlled by DMX512 has an address, which is the first DMX control channel to which it will respond.
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