A synthesizer module that takes raw sound and modifies its timbre (tone) or its amplitude (volume) in some way. In most synths, these modules include filters and amplifiers. Also called a modulator. See also VCA, VCF.
modular digital multitrack (MD : Multitrack recording systems that record digital audio data on a videocassette, using a rotating drum in the same manner as a DAT recorder. MDMs are typically expandable by locking together multiple MDM modules. There are two MDM standards: the Alesis ADAT and compatibles which record on S-VHS tape, and the Tascam DA-88 and compatibles, which record on Hi-8mm tape. Examples of MDMs include the Akai A-DAM, Alesis ADAT, Tascam DA-88 and Yamaha DMR8/DRU8. Also called a modular recorder.