Specifications

Granular audio processor. Granularizes in real-time the incoming audio stream or the “frozen” delay/recording buffer.

Features

  • Recording buffer duration: 1s (32kHz, 16-bit, stereo) to 8s (16kHz, 8-bit µ-law, mono). 4 quality settings.
  • Grain size: 16ms to 1s.
  • Maximum number of concurrent grains: 40 to 60 depending on recording buffer resolution.
  • Grain generation time-base: periodical, randomized, or externally clocked.
  • Grain envelopes: continuously variable between boxcar, triangle, Hann.
  • Playback modes: granular, microlooper/buffer-lock, time-domain pitch-shifter/time-stretcher (WSOLA), ????.
  • 4-AP diffuser to post-process the granularized signal.
  • Post processing (blending) settings: dry/wet balance, random panning amount, feedback amount, reverb amount.
  • 4 memory locations for “frozen” recording buffers.

Controls

  • Freeze push-button.
  • Blending setting (or audio quality) selection button.
  • Load/save button.
  • Grain position, size and pitch knobs.
  • Input gain knob, -18dB to 6dB.
  • Grain density and texture knobs.
  • Multi-function “Blending mode” knob.

Inputs and outputs

  • Buffer freeze gate input.
  • Grain generation trigger input.
  • Grain position CV.
  • Grain size CV.
  • Pitch-shifting/transposition 1V/Oct CV.
  • Dry/wet CV (or feedback, balance, reverb amount – depending on blend mode).
  • Grain density CV.
  • Grain texture/timbre CV.
  • 2-channel audio input (line-level, with pre-amplifier/attenuator).
  • 2-channel audio output (modular level).

Technical characteristics

  • Input impedances: 100k.
  • CV range: +/- 5V. CVs outside of this range are simply clipped.
  • Internal processing: 32kHz, 32-bit floating point. RAM Recording buffer uses 16-bit (high quality) or 8-bit µ-law (low quality) resolution.
  • Open-source hardware and firmware.
  • Easy firmware updates through an audio interface.
  • Cortex-M4 ARM processor.
  • 18-HP.
  • Current consumption: +12V: 120mA ; -12V: 10mA.