What's this?

Graillon is a Vocal Live Changer that brings a world of possibilities right into your DAW, with carefully designed features:

The Pitch-Tracking Modulation, unique to Graillon, changes the type of speakers, generates throat sounds, creates choruses, make octaver sounds, enriches a voice to make it more masculine.

The Pitch Shifter cleanly transpose a voice up and down, and has been optimized for voice.

The Pitch Correction module brings an immediate robotic sound, while the Bitcrusher addition softly add sparkles to the mix.

This is Freemium

  • Graillon Free Edition gets the Pitch Shifting and Pitch Correction.
  • Graillon Full Edition gets everything.


Graillon is the result of a long search for new kinds of vocal effects. Its processing adds 23ms of latency, which is not instant but competitive when compared to other pitch-shifters.

First, do no harm

We care a lot about your signal and how to preserve it. Refined tuning has been given multiple times to ensure the cleanest sound quality.

Thank you for using AUBURN SOUNDS® GRAILLON.
GRAILLON's goal is to lead your voice into uncharted territory.
Version 1 was mostly about the novel use of pitch tracking
frequency shifting applied to speech. GRAILLON 2 is a more expressive
solution for live voice changing.
You can now correct the tuning of a voice thanks to a few
parameters. Clean, low latency pitch shifting was added. This
algorithm has been carefully tuned for vocals.
The commercial version of GRAILLON now features the pitch-
tracking modulation of version 1. This part is now more versatile with
a new ring mode.
A bitcrusher has been added for drums and robots alike. It acts on the
mantissa of a floating-point representation so that it doesn't depend
on gain. As such, it sounds a bit different than the usual.
We strongly recommend you to purchase the full version in order to
get the real experience of using GRAILLON 2.
You will use GRAILLON to:
• Correct the tuning of vocals
• Make a voice growl
• Shift the pitch of vocals neatly
• Reinforce the bass of monophonic pitched sounds
• Create robotic voices
• Make a more masculine voice
• and many other uses...

GRAILLON is available as a VST2 / VST3 / Audio Unit / AAX / LV2
plug-in for Windows 7 or later, and macOS 10.10 or later, and Ubuntu
16.04 or later.
Our plug-ins have been tested with a wide variety of Digital Audio
Workstations hosts (DAW). However if you find out your DAW isn't
supported, please report a bug at contact@auburnsounds.com.
Supported sampling rates range from 22050 kHz to 384 kHz.

GRAILLON version 2.6 User Manual
For Windows users:
Double-click on the .exe installer and follow the instructions.
When using the VST 2.4 format, you may have to enter the right
VST 2.4 directory in order for your DAW to find the plug-in. This is
usually explained in your DAW support page.
For macOS users:
Double-click on the .pkg installer. If GateKeeper complains about
the Developer being unidentified, try again with Right Click / "Open".
You will need to reboot your Mac computer to see the new Audio Unit
(Logic, Live, GarageBand...).
For Linux users:
• Copy the LV2 plug-in in your LV2 directory
• Copy the VST2 plug-in in your VST2 directory
• Copy the VST3 plug-in (a .vst3 directory) in your VST3 directory

Left / Right
Pitch detection is performed on a mono-signal, which is an user-
defined sum of the left and right channel (default: left).
Bit Crusher
Quantize Rate of time quantization, expressed in number of
Bit Reduction
Reduces the number of bits in floating-point mantissa. Therefore,
adapts to signal gain.
Static Pitch Shift Changes the pitch of input signal. The input
doesn't have to be a voice, but the algorithm is specialized for this
kind of input.
Preserve Formants Applies original spectral envelope to pitched
Enable Correction Amount. Most useful values are 0 and 100%.
Smooth Makes Pitch Transitions faster or more natural. Set to
minimum for a robotic effect

Snap Range How far the Pitch is willing to be corrected to stick on
an enabled note (default: jump up to 8 semitones).
Reference Tunes reference pitch for note A6 (default: 440 Hz).
Inertia Reduces Pitch Correction jumps by making choosen notes
"stick". This may change actual melody. Quite a critical setting.
Pitch-Tracking Modulation (PTM)
Modulation Selector Chooses between Ring Modulation and
Shifted Voices Mixes modulated copies of the Pitch-Corrected input
voice. Modulation rations are fixed fractions of the detected pitch: 1/4,
1/3, 1/2, 2/3.
Octave Shifts the fixed modulation ratios by an octave up or down.
Lead Voice How much the Pitch-Corrected, non-modulated input
gets mixed.
Low Cut Filter Removes some bass energy before Pitch-Tracking
Modulation. 12 dB/oct high-pass filter.
Dry Mix Mix input signal, delayed to match the Wet signal
Output Level Gain of the output section, after Dry Mix.
Amount This makes every other parameter go back to normal

Non-speech input
Some customers use GRAILLON on non-speech input, like tiger
roars. If you make any discovery of a new use case, please tell us
about it at contact@auburnsounds.com .
No Stereo Support
In order to lower CPU requirements and support low buffer sizes,
GRAILLON reduces your input signal to mono.
At 44100 Hz, GRAILLON has a latency of 1074 samples (24.3 ms).
At 48000 Hz, GRAILLON has a latency of 1074 samples (22.4 ms).
At 88200 Hz, GRAILLON has a latency of 2148 samples (24.3 ms).
At 96000 Hz, GRAILLON has a latency of 2148 samples (22.4 ms).
At 192000 Hz, GRAILLON has a latency of 4296 samples (22.4 ms).

GRAILLON is a work of love and many people provided valuable
input. Hereby, I'd like to thank people who contributed to the effort.
Programming, UI, DSP
• Guillaume Piolat
• Denis Morin https://soundcloud.com/youpidoumusic
• Geoffrey Fernandez https://graindolium.bandcamp.com/
• Marie Charmoillaux https://soundcloud.com/didou-mariecharmoillaux
• Ryan Clough https://soundcloud.com/escherbeat
• Naoki Ohmori https://soundcloud.com/naoki-ohmori
Céline Alary, Bruno Berthier, Céline Blanc, Maël Bosson, Stéphanie
Cherruet, Charles Guillemet, Mickael Istria, Martin Kirchgessner,
Quentin Sabah, and everyone who hosted me!
I'd also like to thank the D community for their continuous help and
for being a friendly bunch.
Also thanks to all friends, family members, and supporters who
didn't make it to the list. I'll never forget your support.

Free Edition

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