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 Aurora FM by Audio Nebula is a Virtual Instrument Audio Plugin. It functions as a VST Plugin.
Aurora FM
Product Aurora FM
Developer Audio Nebula
Price (MSRP)
$17 CAD - Introductory pricing
Type / Tags FM SynthesizerFMFM SynthFM SynthesisFM SynthesiserSynth (FM)
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
Downloads Released
Miscellaneous Information
Copy ProtectionKey File

Aurora FM is a 6-operator pure FM synthesizer featuring advanced modulation capabilities.


  • 6-operator, 32-algorithm advanced FM synthesizer with 8 sine-based waveforms, 30 voices, deep modulation, overdrive/chorus/delay/reverb effects, and performance features.
  • Single-screen, everything-visible, non-skeuomorphic UI with controls designed for efficient mouse interaction and visual feedback; no hidden parameters, tabs, menu-diving, etc.
  • DPI-aware and custom scaling from 50-150%.
  • Much more than a mere DX7 emulation - Aurora FM translates Yamaha DX7/DX21/DX27/DX100/TX81Z/DX11 patches but is a superior, semi-modular, flexible, highly-usable modern instrument for musicians and synthesists.
  • 100% original SSE-optimized C++ code (no SynthEdit, no VSTGUI, no 3rd party libraries), high-resolution sine generators, and full-rate sample-accurate modulation combine for a great sound.
  • Inspired by modulation monsters like the Alesis Ion and Waldorf Q.



  • High-resolution sine generators provide the 8 sine and sine-transorm waveforms found in the TX81Z and DX11.
  • 3 frequency selection modes - Ratio, Fixed, and the unique Relative mode which facilitates setting intervals.
  • Variable waveform sync phase (0, pi/2, pi, 3pi/2, None).
  • On/Off toggling with clear visual feedback.
  • Variable 2x3 or 3x2 algorithm-dependent operator layout with visual separation of modulators and carriers provides unparalleled clarity and navigation.


  • 6-stage (Delay, Attack, Decay1, Decay2, Sustain, Release).
  • 3 slopes: Linear, Exponential, Logarithmic.
  • Tempo-syncable.
  • Loopable.

Modulation Sources:

  • 2 x LFOs, 1 x S&H, 1 x Envelope.
  • Tempo-syncable.
  • 3 voicing modes: Mono Reset, Mono Run, Poly Reset.
    • Monophonic mod sources are global and shared by all voices; Polyphonic mod sources are unique to each voice.
    • Reset/Run - Resets at each key-press / Free-running.
  • Amplitude scaling by modwheel and velocity.

Modulation Routing:

  • Pitch and amplitude modulation by 4 modulation sources + modwheel, with 3 modulation polarity modes and 3 convenient modulation ranges.
  • Additional amplitude scaling by Key and Velocity.
  • Envelope rate scaling by Key, Velocity (On + Off), and selectable modulation source.
  • Modulation of Mod Source Rate, Pan, Unison Detune, FM Feedback, and some Effects parameters by any modulation source.


  • Unison with 2/3 voices and variable detune.
  • Portamento (Mode:Off/On/Legato, Rate).
  • Polyphonic (30-voice) or Mono voice mode.
  • Pitch bend range, +/- 24 semitone Transpose, variable A440 tuning (+/- 1 semitone in 0.1 Hz increments).


  • Overdrive.
  • Chorus (Off/On, Rate, Depth).
  • Tempo-syncable Delay (Time, Feedback, Level).
  • Reverb (Time, Tone, Level, Off/Mix/Wet Only).
  • Output bit-depth reduction, optional dithering.

Read more and grab the demo at http://www.audionebula.ca.

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