Synthetic Sound Labs Debuts VCA/ADSR Envelope Generator Combo Module

Synthetic-Sound-Labs-Envelope-VCA-PanelSynthetic Sound Labs has released the newest member of its line of (DOTCOM) compatible analog synthesizer modules, the 1235 Voltage Controlled Amplifier (VCA) / ADSR Envelope Generator (ADSR) Combo.

The compact module carries out functions that would traditionally require the space for at least two separate 1 MU modules in a single-width space.

In a typical voltage controlled studio such as a modular synthesizer, ADSR envelopes produce user-adjustable, time-varying DC voltages, and are used to control the dynamics of a sound. VCAs can use those ADSR outputs to control the relative amplitude of signals passed to it. Those signals may be either audio, or other control voltages. The VCA and ADSR have been ‘normalized’ for convenience, but may also be used completely separately.


  • Low-noise, low-distortion VCA provides controls for initial level and external control voltage amount.
  • ADSR Mode switch selects between Normal (single gate input per cycle), LFO (continuous cycling), and Gated LFO (cycles while Gate is applied).
  • Also included is a switch to select between the ‘traditional’ Logarithmic envelope shape, a linear envelope typical of early-era digital synths, and an Exponential envelope that’s handy for using linear VCAs is if they had an expo mode. ADSR has separate positive and negative going outputs.
  • Mmanual Gate button is provided which contains an LED indicating the relative output levels. The VCA & ADSR lighted slide controls allow ample room for manual adjustment, and the ADSR LEDs conveniently brighten to indicate the envelope cycle stages.
  • Flatted toggle switches control the six modes. 1?4” enclosed output jacks permit smooth, effortless patching. Quality solder masked, fiberglass-epoxy printed circuit boards, precision automated robotics and meticulous hand-crafted assembly “assure years of trouble-free service.”

Pricing and Availability.

SSL’s 1235 Voltage Controlled Amplifier (VCA) / ADSR Envelope Generator (ADSR) Combo is priced at $275 US and available from Synthetic Sounds Labs or select retailers.

The Finger Prince (Interview)

The latest episode of ADSR – an Interview series that looks at the Australian electronic music scene – visits Sydney techno duo The Finger Prince:

We talk music writing and recording processes as they break down the mix for the title track off their ‘Mao’ EP – how they got the sounds and what synths and gear they used.

It’s all analog gear – 808, 909, 303, Juno 6, Moog, Jupiter 6 and many more… if you are into hardware you are in for a treat.

They also talk about their techno label Motorik!, their recent remix of The Presets and how acid is blame/thank for the name and more.

You here more from The Finger Prince on SoundCloud or check on their label site.

The Pittsburgh Modular ADSR Envelope Generator

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Pittsburgh Modular has introduced a Eurorack ADSR  – a four stage envelope generator with independently adjustable Attack, Decay, Sustain, and Release stages.

Module Controls:

  • A Pot – Attack Stage Control
  • D Pot – Decy Stage Control
  • S Pot – Sustain Stage Control
  • R Pot – Release Stage Control
  • I Jack – Input Jack
  • Range Switch – Adjust the range of the stage controls.
  • O Jack – Output Jack
The Pittsburgh Modular ADSR is expected to start shipping next week. See the PM site for details.

ADSR Episode 2: Seekae Interview

Reader Marty from sent word of the latest video in the ADSR series of video interviews, which focus on the Australian electronic music scene.

This episode of ADSR features electronic trio Seekae in their Sydney City studio.

They go through the process of writing ‘+Dome’ – their 2nd album. You’ll find out what plugins and hardware they use, how they make their loops/samples and how they bring it all together to perform live using Ableton Live.

This is just the second episode of the ADSR series, so let them know what you think!

New Synth Video Series – ADSR

Reader Marty sent word of his new synth-focused video series:

Hi Synthtopia,

I have started up a new online video series called ADSR – looking at musicians and their music process… and very aimed at the synth/audio geeks out there.

The first episode is on Donney Benet, an Aussie Miami VIce loving guy. He plays a Little Phatty, Prophet 08, Yamaha drum machine, mattel drum toy and guitar to record an improv track.

The next episode is of Seekae and their Ableton Live setup, then Jonti who is signed to Stones Throw. More to come!

Plans for the series, which is hosted at, are to interview musicians, “discuss music, get insights into their writing process, gear they use and hints and tips for you musicians out there.”

Doepfer Intros DIY Synth Kit At 2010 Winter NAMM Show

doepfer-diy-synthesizer-kitDoepfer has announced that it will be introducing a DIY Synth Kit at the 2010 Winter NAMM Show.

The kit is made of a pc board that includes all that is necessary to build a standard analog synthesizer:

  • VCO: sawtooth and rectangle output (with variable pulse width), several frequency CV inputs, several PW/PWM CV inputs, linear FM input, hard sync input
  • VCF: multimode filter, lowp, highp and bandpass output (optional low-notch-highpass with external potentiometer), 12dB/oct, several frequency CV inputs, several audio inputs, manual resonance control, resonance up to self oscillation
  • VCA: exponential control scale, several CV inputs , several audio inputs , audio output
  • ADSR: connections for attack, decay, sustain and release controls, connections for range switch (3 ranges), connections for LED display, ADSR output
  • LFO: triangle and rectangle outputs, connections for frequency control (optional different controls for up/down time), connection for range switch (3 ranges), connections for LED display
  • Slew Limiter: connections for slew control, input, output Inverter: input, output

The kit is planned for customers who are familiar with electronic basics as the kit does not include the controls, switches, sockets and the case. These elements have to be added and wired by the customer. Continue reading

Synthesizer Programming: Making A Bell sound

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Synthesizer Programming – Episode 5 – Bell sound

via Thalassa77:

How to create a bell sound using FM modulation. The parameters values are approx. Values are expressed in %. The synthesizer is synth1 a free vst synthesizer but you can get similar sounds using similar parameters with other synts ( hardware or software )

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