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Schematic of ADSR. The most common kind of envelope generator has four stages: attack, decay, sustain, and release (ADSR). [2] Attack is the time taken for the rise of the level from nil to peak. Decay is the time taken for the level to reduce from the attack level to the sustain level. Sustain is the level maintained until the key is released.
Modules: 921 VCO, 911 Envelope Generator; 902 VCA. The Moog synthesizer consists of separate modules – such as oscillators, amplifiers, envelope generators, filters, noise generators, triggers and mixers – which can be connected in a variety of ways via patch cords. [6] [3] The modules can also be used to control each other. [3]
The basic modular functions are: signal, control, logic and timing. Typically, inputs and outputs are an electric voltage.. The difference between a synthesizer module and a stand-alone effects unit is that an effects unit will have connections for input and output of the audio signal and knobs or switches for users to control various parameters of the device (for example, the modulation rate ...
It was designed by Moog Engineer Jim Scott in consultation with Tom Rhea, with electronic refinement input from David Luce and Robert Moog. The Micromoog served as the basis for the Multimoog , a similarly styled, but more generously equipped synthesizer featuring two VCOs, a larger 44-note keyboard, greater modulation options and an early ...
The envelope generator can be triggered by either the keyboard, or the LFO; Oscillator 2 can be tuned independently or hard-synced to oscillator 1; Noise generator. (Digital pseudo-random noise) Ring modulation (labeled "Bell Tone") - this is actually amplitude modulation of VCO 1 and 2) Polyphonic oscillator. This is a divide-down, square wave ...
These sweeps are created by varying the cutoff frequency of the VCF (sometimes very slowly). Controlling the cutoff by means of a transient voltage control, such as an envelope generator, especially with relatively fast attack settings, may simulate the attack transients of natural or acoustic instruments.
ADSR envelope generator, keyboard tracking: Attenuator: ADSR envelope generator: Effects: Frequency modulation using oscillator 3/noise: Input/output; Keyboard: 44-note, low-note priority: Left-hand control: Pitch bend and mod wheels: External control: CV/gate, MIDI in/out/thru (2016 reissue only), glide and decay via 0.206" dia Switchcraft S ...
Moog developed a means of controlling pitch through voltage, the voltage-controlled oscillator. [8] This, along with Moog components such as envelopes, noise generators, filters, and sequencers, became standard components in synthesizers. [9] [6]