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falistri¬†/ faňąlistri /¬†s.f., plural [Modenese dialect, probably from latin fauilla, ‚Äėspark‚Äô] ‚Äď ‚Äėsparks‚Äô. One cannot think about a lively bonfire without sparks crackling and dancing through the air. ‚ÄėFalistri‚Äô is what lights up your patch and takes care of how it moves, through sparks, motions and crackles.

The FALISTRI is a fully analog multipurpose movement manager designed to generate and edit voltages to easily accomplish any patch.

The module can be divided in two big parts: in the upper two thirds of the panel take place two specular function generators, while the lower third is composed by a dual cascaded frequency divider, a linear slew limiter and a four quadrant multiplier.

Key Features

  • two generators as envelopes or oscillators
  • independent shape per stage
  • independent time from shape
  • quadrature mode for both envelope or oscillator mode
  • manual buttons for realtime performance and ease of interaction
  • unipolar bipolar and attenuverted output
  • EOR and EOF digital outputs
  • two cascaded flip-flop for sub oscillators, clock dividers or more rhythmical combinations
  • DC-coupled four quadrant multiplier usable for AM RM or as VCA
  • slew limiter with separated rise and fall
  • analog design

Size 18HP

Depth 38mm

Power Requirements

  • 170 mA +12V idle
  • 170 mA -12V idle

Function Generators


The generators are made to quickly and intuitively achieve the function needed, providing several outputs and inputs to dynamically change their times and trigs. The main peculiarity in this design is the way shapes are managed:

  • times are independent from shapes¬†‚Ästwhen sculpting an envelope, you can freely morph from¬†Logarithmic¬†to¬†Linear¬†to¬†Exponential¬†slope, without changing the time needed to complete Rise or Fall (and their Loop time when used as oscillator);
  • shapes are exclusive per each stage¬†‚Ästyou can have Logarithmic Rise and Logarithmic Fall, Linear Attack and Logarithmic Fall or any other combination of the three modes, and of course any blending in between these shapes, allowing deep sculptures of sound when used as Control Voltage as well as audio source.

The time switch scales the time factor on both rise and fall stages in each generator.

Both manual button (for hands-on control) and external trigger/gate Input are available, and are used in the three possible play modes:

  • Loop¬†‚Äď where end of fall stage triggers the start of rise, incoming¬†triggers are not needed, but if present reset the rise;
  • Transient¬†‚Äď only the low-to-high transition of the trigger/gate signal is used to start the rise stage, while fall stage is automatically recalled at the end of rise;
  • Sustained¬†‚Ästthe low-to-high transition of the trigger/gate signal is used to start the rise stage, while the fall stage is trigger by the high-to-low transition of the¬†Trigger/Gate signal.

A Gate input for switching from Loop to Transient and vice versa is also present.

Quadrature (Q) mode combines yellow and green function generators with the following stages connections:

  • end of yellow rise triggers start of green rise
  • end of green rise triggers start of yellow fall
  • end of yellow fall triggers start of green fall


CV Outputs

  • yellow and green
    • unipolar 0V/+10V
    • bipolar -5V/+5V
    • attenuverted -10V/0/+10V
  • Analog OR or Maximum function between yellow and green

Gate Outputs

  • yellow and green
    • End of Rise
    • End of Fall


Function Editors


Cascaded Frequency Dividers

Also known as flip/flop or sub-octave processor, each of these changes its logic state each time a low to high transition is performed. Sections are semi-normalled in order to achieve 1/2 and 1/4 outputs from a single input. Output range switches are useful to obtain unipolar (0V/+10V) or bipolar signals (-5V/+5V).

When an audio signal is used it works as a¬†sub-octave generator¬†(square/pulse preferred). When a clock is used it works as a¬†clock divider. Random clocks from SAP√ąL create interesting¬†variable-length sequences of gates.


Four Quadrant Multiplier

Also known as ring modulator, balanced modulator, or ThruZero VCA, this sections precisely multiplies two signals, making any sort of amplitude/loudness modulation possible.

With an exceptional linearity, and a bandwidth from DC to more than 20KHz, the result of this operation is completely up to the sources in use: from a simple dual unipolar multiplication (one quadrant), to unipolar / bipolar (two quadrants), up to any kind of dual bipolar multiplication (four quadrants).

The two inlets are semi-normalled to yellow and green generators. The 4 led matrix shows which of the quadrant is currently in use.

It may also be used as a VCA, with linear CV response.


Linear Slew Limiter

Also known as portamento/glide when using a pitched CV,  this processor comes into play when any voltage smoothing is needed. With independent rise and fall slew rates, it is possible to precisely smooth any kind of voltage transition.

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