Categories: Wikipedia articles needing context | Wikipedia introduction cleanup | Articles lacking sources from July 2006 | All articles lacking sources | Elka synthesizers | Musical instrument stubs Synthesis (from the ancient Greek σύν (with) and θεσις (placing), is commonly understood to be an integration of two or more pre-existing elements which results in a new creation. ... An analog synthesizer is a synthesizer that uses analog circuits and analog computer techniques to generate sound electronically. ... Subtractive synthesis is a method of sound synthesis characterised by the application of an audio filter to a source signal. ... Polyphony is the property of an electronic musical instrument which describes how many notes it can sound at one time. ... Often used in the realm of digital keyboard synthesisers, an instrument that is multitimbral is one which allows you to combine several voices or timbres at the same time. ... A voltage-controlled amplifier is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated CV). ... Low frequency oscillation, often abbreviated to LFO, is a term that predominantly refers to an audio technique specifically used in the production of electronic music. ... The layout of a typical musical keyboard A musical keyboard is the set of adjacent depressible levers on a musical instrument which cause the instrument to produce sounds. ... 1981 (MCMLXXXI) was a common year starting on Thursday of the Gregorian calendar. ... 1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar. ...