Desk
An alternative term for mixer (See also console).
Search
Found 25736 results
To find the exact phrase, put the words in quotes or join them together with a plus sign e.g. live+recording or "live recording".
To find, say, all live recording articles that mention Avid, enter: live+recording +avid - and use sidebar filters to narrow down searches further.
Detent
One or more physical click-stops which can be felt when a rotary control is moved. Typically used to identify the centre of a control such as a pan or EQ cut/boost knob, or to give the impression of preset positions on a gain control.
DI
An abbreviation for ‘Direct Instrument’ or ‘Direct Inject’ - the two terms being used interchangeably. Used when an electrical sound source (eg electric guitar, bass or keyboard) is connected directly into an audio chain, rather than captured with a microphone in front of a amp/loudspeaker.
Diaphragm
the movable membrane in a microphone capsule which responds mechanically to variations in the pressure or pressure gradient of sound waves. The mechanical diaphragm vibrations are converted into an electrical signal usually through electromagnetic or electrostatic techniques such as ribbon, moving coil, capacitor or electret devices.
DI Box
Direct Injection, or Direct Instrument Box. A device which accepts the signal input from a guitar, bass, or keyboard and conditions it to conform to the requirements of a microphone signal at the output. The output is a mic-level, balanced signal with a low source impedance, capable of driving long mic cables. There is usually a facility to break the ground continuity between mic cable and source to avoid unwanted ground loop noises. Both active and passive versions are available, the former requiring power from internal batteries or phantom power via the mic cable. Active DI boxes generally have higher input impedances than passive types and are generally considered to sound better.
Digital Delay
A digital processor that generates delay and echo effects.
DIN Connector
A consumer multi-pin connection format used for vintage microphones, some consumer audio equipment, and MIDI cabling. Various pin configurations are available.
Diode-Bridge Compressor
A form of audio compressor which uses a diode-bridge (sometimes known as a diode-ring) arrangement as the variable gain-reducing element. The design was popular in the 1960s as it provided faster responses than typical opto-compressors, and less distortion than many FET designs. However, noise can be an issue as the audio signal has to be attenuated heavily before the diode-bridge, and considerable (~40dB) gain added subsequently. The diodes also need to be closely matched to maintain low distortion.
Direct Coupling
A means of connecting two electrical circuits so that both AC and DC signals may be passed between them.
Dither
A system whereby low-level noise equivalent to one quantising level is combined with a digitised audio signal in such a way as to perfectly linearise the digital system. Dither must be employed whenever the wordlength is reduced, otherwise quantising distortion errors will manifest.
Disc
Used to describe vinyl discs, CDs and MiniDiscs.
Disk
An abbreviation of Diskette, but now used to describe computer floppy, hard and removable data storage disks.
Dolby Surround-Sound
Dolby’s surround sound systems started with an analogue 4:2:4 phase-matrix system with a very elaborate active-steering decoder called ProLogic, before moving into the digital realm with Dolby Digital, Dolby Digital Plus, Dolby True HD, and others.
Dolby HX
Invented by Bang & Olufsen and licensed to Dolby. HX (often marketed as HX Pro) stands for 'Headroom eXtension' and it is a record-processing system used on some analogue open-reel and cassette tape-recorders (there is no complementary replay processing). Dolby HX Pro varies the amount of recording bias depending on the strength of high-frequencies in the audio signal itself to avoid magnetic saturation and over-biasing. This makes it possible to record with a higher overall fluxivity on the tape.
DOS
Disk Operating System. Part of the operating system of PC and PC compatible computers
Dome
A specific shape of drive unit diaphragm intended to push and pull the air to create acoustic sound waves. Most tweeters use dome-shaped diaphragms which are driven around the circumference by the drive unit’s motor system. ‘Soft-domes’ are made of a fabric - often silk - while metal domes are constructed from a light metal like aluminium, or some form of metal alloy.
Double-ended Noise Reduction
A method for removing or attenuating the noise component of a recording or transmission system, in which the signal is pre-conditioned in a specific way which is reversed on playback. Most analogue noise-reduction systems are of the double-ended type, such as the Dolby and DBX systems.
Double-lapped Screen
Also known as a Reussen screen. The signal-carrying wires in a microphone cable are protected from external electrostatic and RF interference by a ‘screen’ which is a surrounding conductor connected to earth or ground. The Reussen screen is a specific form of cable screen, comprising two overlapping and counter-wound layers which are unlikely to ‘open up’ if the cable is bent, yet remain highly flexible
DSP
Digital Signal Processor. A powerful microchip used to process digital signals.
Drive unit
A physical device designed to generate an acoustic sound wave in response to an electrical input signal. Drive units can be designed to reproduce almost the full audio spectrum, but most are optimised to reproduce a restricted portion, such as a bass unit (woofer) or high-frequency unit (tweeter). A range of technologies are employed, with most being moving-coil units, but ribbon and electrostatic drive units also exist, each with a different balance of advantages and disadvantages. Also known as a ‘driver’.