qu-bit-electronix-aurora

Qu-Bit Electronix Aurora

Spectral reverb from shimmer to alien soundscapes

12 HP Eurorack module

Aurora is a spectral reverb module by Qu-Bit Electronix that uses a phase vocoder and FFT-based engine to manipulate audio in the frequency domain. It produces sounds ranging from lush time-stretched tails and icy shimmers to alien textures, whale songs, and cybernetic metallic effects. Its response is entirely dependent on the input signal, making every patch unique.

Features

  • Spectral reverb with true stereo audio IO
  • Phase vocoder audio engine running at 48kHz 24-bit
  • FFT-based spectral processing with 4 selectable FFT sizes: 512, 1024, 2048, 4096
  • Warp: frequency domain pitch shifting from 3 octaves down to 3 octaves up with 1V/oct CV tracking
  • Time: amplitude domain blurring for time-stretched tails
  • Blur: frequency domain smearing for alien spectral effects
  • Reflect: multi-tap delay time zone morphing for rhythmic reverb combinations
  • Atmosphere: combined spectral and time domain filter for tonal shaping from whalesongs to icy textures
  • Reverse: plays input audio backwards with gate CV input
  • Freeze: locks spectral snapshot of input signal with gate CV input
  • Mix: dry/wet blend with CV input
  • Shift button for secondary functions including input level, USB reload, FFT size, and factory reset

Controls & Jacks (21)

  • Atmosphere— Tames or unleashes frequency spectrum with precision filtering and harmonic additions
  • Mix— Mix knob - dry/wet balance
  • Reverse— Reverse button - reverses spectral playback
  • Left In— Left channel audio input for the spectral reverb processor
  • Shift— Accesses secondary functions and parameter pages when held
  • Mix CV In— Mix knob - dry/wet balance
  • Warp— Transposes the wet signal up or down 3 octaves from the original pitch
  • Blur— Smears spectral content across frequency bands, creating diffuse, washy textures at higher settings
  • Left Out— Left channel audio output from the spectral reverb processor
  • Reflect— Morphs between multi tap stereo delay time zones, creating long tails
  • Freeze— Freeze button - freezes current spectral content
  • Warp CV In— Transposes the wet signal up or down 3 octaves from the original pitch
  • Atmosphere CV In— CV input for voltage control of the Atmosphere parameter
  • Reflect CV In— Morphs between multi tap stereo delay time zones, creating long tails
  • Freeze In— Locks and holds incoming audio for spectral drones
  • Right In— Right channel audio input; normalled from Left In when unpatched for mono-to-stereo operation
  • Right Out— Right channel audio output from the spectral reverb processor
  • Time CV In— CV input for voltage control of the reverb decay time
  • Reverse In— Plays incoming audio backwards into the signal path
  • Time— Controls reverb decay time from short ambiences to infinite sustain
  • Blur CV In— CV input for voltage control of the Blur parameter

How-To Guides

  • Factory Reset
  • Reload USB Settings
  • Firmware Update
  • Set Input Level
  • Change FFT Size
  • Configure options.txt Settings
  • Basic Spectral Reverb
  • Spectral Whale Songs
  • Arpeggiating Reverb
  • Spectral Tear
  • Note Extender
  • Polyrhythm Percussion

Explore the interactive Aurora panel on BleepDex — tap any control to learn what it does.

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