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The Stoel Music Systems ADSR provides a classic synthesizer envelope. Attack, decay, sustain, and release are all controlled with knobs. The ADSR envelope output is provided in both normal and inverted forms. The manual trigger button fires off the ADSR without a gate signal present, which is excellent for playing sounds live or sorting out complicated patches.
All Stoel Music Systems modules feature aluminum front panels with a durable high-gloss white finish. For a crisp appearance and exceptional durability, the front panel markings are digitally printed at high resolution with UV-cured ink. Mounting holes are plated to significantly reduce screw rash. The power connection features polarity protection to prevent accidental damage to the module if it is connected backward.
Each module includes a 12” long 10-pin to 16-pin ribbon cable compatible with the Eurorack standard, M3 mounting screws, and a complimentary sticker.
What is an ADSR and How Can It Be Used Creatively?
An ADSR envelope generator is a type of module that creates a voltage envelope, which can be used to control various parameters in a synthesizer. The acronym "ADSR" stands for Attack, Decay, Sustain, and Release, which are the four stages of the envelope. The Attack stage is the time it takes for the envelope to reach its maximum level, the Decay stage is the time it takes for the envelope to fall to the sustain level, and the Sustain stage is the level at which the envelope stays until the release stage, and the Release stage is the time it takes for the envelope to return to zero after the sustain stage.
A voltage-controlled ADSR is a type of envelope generator that allows the user to control the various stages of the envelope with voltage inputs. This allows for greater flexibility and modulation options, as the user can use other modules to control the envelope stages. Controlling a voltage-controlled ADSR with a sequencer or clock divider can add exciting variations to a sound, like extending the attack or decay time on specific notes.
ADSRs can be used to control various parameters in a synthesizer, such as the amplitude of a sound passing through a VCA or the cutoff frequency of a filter. They can also be used to create more complex modulation patterns, such as using the envelope to control the rate of an LFO.
Some more unusual ways to exploit ADSRs include using them to control the pitch of an oscillator, using them to control the parameters of a sample and hold module, or using them to control the rate of a sequencer. Additionally, using multiple envelope generators in parallel or in series can create more complex and dynamic modulation patterns.
More Information
| +12V Current Draw | 15ma |
|---|---|
| -12V Current Draw | 11ma |
| +5V Current Draw | 0ma |
| Mounting Screws | 2 |
| Module Type | Envelope |
| Mounting Depth | 21mm |
| HP Size | 6 HP |
| Cable Required? | Yes |