Three-operator phase mod/FM Voice

Grackle from Entropic Loop is a three-operator phase modulation voice with a unique take on a familiar architecture. Phase modulation, popularly known as FM synthesis, gained popularity in the 1980s with the rise of more affordable digital synthesizers such as the Yamaha DX-7 after being developed by researcher John Chowning while at Stanford University in the late 1960s. While Grackle uses the fundamental techniques found in FM synthesizers, its implementation is unique; unlocking a new dimension in digital synthesis with sounds that stretch from the familiar to deep uncharted territory. Although it has a distinctly digital sound, Grackle's interface is immediate and playable in a way that almost feels analog.

• 3 operator FM (phase modulation) synthesis with a unique, just-intonation-based approach to setting modulator ratios that uses the harmonic series

• 3 operator configurations (algorithms):

  ADD: Both MOD operators are added together and used to modulate the phase of the carrier

  MUL: Both operators are multiplied together before being run through a 7-stage triangular wavefolder

  CASCADE: MOD1 operator modulates the phase of MOD2 operator, MOD2 then modulates the phase of the carrier

• Built-in VCA envelope with 3 modes:

  TRIGGERED: Envelope is triggered on a rising edge to the gate input

  ASYMEMETRIC SLEW: Envelope follows the state of the gate input

  CYCLING: Continuous cycling while gate is high

• Individual, audio-rate CV control over modulator intervals, modulator depth, pitch, interval denominator, algorithm type, and envelope growth and decay

• Additional AC-coupled "ActualFM" input for true, through-zero FM

• Dedicated envelope and mod oscillator outputs; useful for modulating external modules, patch programming new modulation paths, and complex feedback possibilities

https://entropicloop.com/manuals/grackle

https://entropicloop.com/manuals/grackle

• 115 mA +12V
• 15 mA -12V
• 0 mA 5V
• 25 mm Depth

This Module is currently available.