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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
- Released
System Requirements
Reported to work on Linux w/Wine 4.0.
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.

Latest User Reviews Average user rating of 5.00 from 1 review

Reviewed By vrbunkos
May 24, 2019

Aurora FM by Audio Nebula

I nearly let this stunning synth slip under the radar. What a mistake that would have been.

Since I already had Dexed, I thought, "Who needs another DX7 emulator?" Recently, I took another look at Aurora FM, not expecting much in the way of surprises. Now that I've been getting to see and hear for myself what it can do, Aurora FM frankly has become my go-to synth for FM.

What did I discover? The user interface is brilliant. All controls are conveniently laid out before you on a single screen. This synth is all about you, the sound designer, and you, the player: efficient mouse-interaction, instant, meaningful visual feedback. With Aurora FM, it's easy to make live corrections on the fly, to think by ear.

Another shock: this synth is completely about FM, 21st century FM. It's about FM synthesis inspired by modern modulation synth legends like the Alesis Ion and Waldorf Q. So, when Aurora FM is able to load and translate Yamaha DX7/DX21/DX27/DX100/TX81Z/DX11 patches, it's not to emulate or recreate ancient history, but to use them as a starting point to going light years further via today's technology and programming.

Besides, nothing is off the shelf about Aurora FM. It is a very high-resolution, precision musical instrument. In fact, In the short time I've been using this synth, I've come across a whole FM world of beautiful new sound combinations that simply wouldn't have been possible in the mid 1980s. For example, how amazingly musical and fresh the many included micro-tonal scales sound in Aurora's sample precise FM colors.

Rewarding to play, intuitive to program.

Currently with the introductory price of $14 US [$17 CAD].

The introductory exceedingly low price might cause some musicians mistakenly to under-value this fine synth.

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Aurora FM

Average user rating of 5.00 from 1 review

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