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Shaped Dual EnvVCA
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Shaped Dual EnvVCA
4ms Company
User Manual 1.0 – November 15, 2022
The Shaped Dual EnvVCA is a dual analog envelope generator, waveshaper, slew limiter, and VCA.
Each of the two channels is identical and they can be used separately or together.
Shaped Dual EnvVCA features:
•Versatile linear, exponential, and logarithmic envelope generator/LFO
•Low-noise, low-distortion, DC-coupled linear VCAs
•Shape slider, CV jack and attenuverters for fading between Exponential, Linear, and Logarithmic
envelope shapes without changing envelope timing
•100% analog
•Sliders and range switches control times from ~2ms (500Hz) to ~2 min. Rise and Fall
•Time CV jack extends time range: ~400 s (2.5kHz) to ~1 hour. µ
•Independent attenuverters for time Rise and Fall
•Blue/Red lights indicate strength and polarity
• buttons for looping envelopes (LFO) Cycle
• input jack and switch for toggling between AR, ASR, and Cycle modes of triggering Trigger
•EOR/F (End of Rise/Fall) gate outputs can be used to chain and sequence events
• knobs scale and shift output without changing VCA volume Env Level and Offset ENV
• jacks for passing audio or CV through the VCA Audio In and Out
•VCA CV inputs to use VCAs independently from the envelopes
• VCA gain internally connected to envelope output when VCA CV jack is left unpatched
• input jacks allow for slew limiting, envelope following/sidechaining, ADSR, and exotic Follow
filtering effects
• Re-trig jumpers allow for re-triggering during rise phase
Cycle
AR
ASR
Cycle
AR
ASR
Rise Fall
Shaped Dual EnvVCA
TimeTime
Follow
VCA CVVCA CV
In
Audio BAudio A
Out
In
Out Lin 5VLin 5V
OR
Shape
Rise Fall
Slow
Fast
Med
Slow
Fast
Trig Cycle
Offset
Level
EOF
Fall
Rise
Shape Shape
Follow
ENV A ENV B
Shape
FallRise
Slow
Fast
Med
Slow
Fast
Trig
Cycle
Offset
Level
EOR A
Table of Contents
Setting up your Shaped Dual EnvVCA! "...................................................................3
Controls and Jacks! "................................................................................................3
Rise and Fall Time Ranges! "....................................................................................6
Patch: Making Notes! ".............................................................................................7
Making Notes (basic)! ".......................................................................................7
Making Notes in Stereo! "...................................................................................7
Synchronizing channels: Making Notes Using Triggers! "...................................8
Creating Stereo Motion! "....................................................................................8
Using a Keyboard or Sequencer! "......................................................................9
Patch: Waveshaping! "............................................................................................10
Modulating Waveshape! ".................................................................................10
Different Waveshapes for Rise and Fall! "...............................................................11
Log Rise with Expo Fall! ".................................................................................11
Any Combination of Shapes! "..........................................................................11
Patch: Modulating Time! ".......................................................................................12
Rapid Bursts! "..................................................................................................12
Ratcheting! "......................................................................................................12
Patch: Making an Oscillator and Synth Drums! "....................................................13
Making an Oscillator! "......................................................................................13
Making a Kick Drum! ".......................................................................................13
Making other Synth Drum sounds! ".................................................................14
Self-patching ideas! "..............................................................................................15
Frequency Modulation (FM)! "...........................................................................15
Chaotic FM! "....................................................................................................15
Utility Patches! "......................................................................................................15
Attenuator! "......................................................................................................15
Trigger Delay with Pulse Width control! "..........................................................15
Inverted Trigger Delay (With Pulse Width Control)! ".........................................15
DC generator (Manual CV)! ".............................................................................15
Creating Envelopes with Trig Jack and Switch, Cycle Button, and Follow Jack! ".16
Triggering with switch set to AR! "....................................................................16
Triggering with switch set to ASR! "..................................................................16
Triggering with RETRIG Jumper Off (Factory Default)! "...................................16
Triggering with RETRIG Jumper On! "...............................................................16
Cycle Button and Triggering with switch set to Cycle! "...................................16
Follow Jack with Gates! "..................................................................................17
Fundamentals of the Follow Jack! "........................................................................17
Audio filter! "......................................................................................................18
Portamento/glide! "...........................................................................................18
Sidechaining (Envelope Following)! "................................................................18
Using non-linear Shapes with Follow! "............................................................19
Creating ADSR Envelopes! "...................................................................................20
ADSR envelope! "..............................................................................................20
Table of Envelope Shapes! "...................................................................................22
Using Offset and Level Knobs! ".............................................................................23
RETRIG Jumper! "...................................................................................................23
Electrical and Mechanical Specifications!............................................................24
Page of 2 24
Setting up your Shaped Dual EnvVCA
1. Power off your Eurorack system.
2. On the back of the Shaped Dual EnvVCA you will see a 10-pin header. The 10-
pin header connects to a Eurorack power header using the included power
cable. Connect the 16-pin end of the power cable to a 16-pin Eurorack power
header on your power supply distribution board and the 10-pin end to the
Shaped Dual EnvVCA with the red stripe on the power cable oriented towards
the bottom of the module.
3. Using the included screws, securely attach the Shaped Dual EnvVCA to the
rails of your case.
4. Power on your Eurorack system.
Note: The Shaped Dual EnvVCA is reverse-polarity protected, but incorrectly
connecting any module in any system can damage other modules on the power bus.
Controls and Jacks
Cycle Buttons
The Cycle buttons toggle the cycling state for each channel. When cycling,
the Shaped Dual EnvVCA behaves like an LFO, with an output waveform
that continuously rises and falls. Each button illuminates orange to indicate
the module is cycling. Note that pressing this button does not reset or alter an
envelope that’s already rising or falling.
Cycling can also be toggled with a gate signal using the jack and switch Trig
(see below).
Rise/Fall Sliders and Switches
The and Rise Fall sliders control the rise and fall times of the envelope.
Moving a slider up makes the rise or fall portion slower, moving it down
makes it faster.
Each slider has a white light that indicates the current stage and output level
of the envelope. When the envelope is in the rise stage, the slider light Rise
will increase in brightness until the envelope hits its maximum. Once the peak
is reached, the light will turn off and the light will turn on, decreasing Rise Fall
in brightness as the envelope falls.
The Rise/Fall switches select the overall range of the sliders. Each slider has
its own switch with three positions: Fast, Med, Slow.
When the switch is flipped to , the envelopes go well into the audio Fast
range, allowing for classic AM, FM, and other fast modulation effects.
The middle position ( ) is designed for typical musical tempos, and can be Med
useful when using the VCA to make notes at common BPMs.
The Slow position is geared for gradual fades and other slow LFO-style
modulations.
See the Rise and Fall Time Ranges chart on page 6 for more information.
Time CV Jack and Rise/Fall CV Knobs
The and Time CV jack modulates the Rise Fall times of the envelope. The
jack feeds two knobs: Rise CV, and Fall CV. Each of these knobs is an
attenuverter (short for “attenuating inverter”) and controls how much the
control voltage on the CV jack will affect the rise or the fall time. Time
Turning an attenuverter knob to the right of center means that a positive
voltage on the CV jack will the rise/fall time and a negative Time lengthen
voltage will the rise/fall time. shorten
Turning a knob to the left of center gives the opposite effect, meaning that a
positive voltage on the CV jack will the the rise/fall time, while a Time shorten
Page of 3 24
Cycle
FallRise
Slow
Fast
Med
Slow
Fast
Time
Fall
Rise
Produktspecifikationer
| Varumärke: | 4ms |
| Kategori: | Inte kategoriserad |
| Modell: | Shaped Dual EnvVCA |
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