V2 Pro

User guide
BEFORE WE GET STARTED
Thank you for buying or trying AudioRain. Your support is greatly appreciated and be sure
that any means we have goes directly into R&D and product enhancement. If you encounter
any problem or simply if you want to give us a feedback, feel free to send us a mail at
support@lesound.io, we will be happy to read from you and/or help you if needed.

Information in this manual is subject to change without notice and does not represent a
commitment on the part of Le Sound. The software described in this manual is furnished
under a license agreement. The software may be used only in accordance of the terms of this
license agreement. It is against the law to copy this software on any medium except as
specifically allowed in the license agreement. No part of this manual may be copied,
photocopied, reproduced, translated, distributed or converted to any electronic or machine-
readable form in whole or in part without prior written approval of Le Sound.

Copyright © 2015 Le Sound

Program Copyright © 2015 Le Sound. All rights reserved.

AudioRain is a trademark of Le Sound.

Windows is either trademark or registered trademark of Microsoft Corporation. Mac OS X, Audio Units and App
Store are registered trademarks of Apple Inc.. VST is trademark of Steinberg Media Technologies GmbH. RTAS,
AAX and Pro Tools are registered trademarks of Avid Technology Inc.. All other product and company names are
either trademarks or registered trademarks of their respective owner. Unauthorized copying, renting or lending
of the software is strictly prohibited.
Visit Le Sound online at http://lesound.io
TABLE OF CONTENTS

INTRODUCTON 4
Procedural audio 4
System requirements 4

INSTALLATION 5
Windows 5
Mac OSX 6
Activation 7

AUDIORAIN SYNTHESIZER 8
AudioRain General Architecture 8
Global Rain Behavior 9
Rain Synthesis Components 10
Preset Manager 15
Menu Options 16

OPEN SOUND CONTROL 18

TouchOSC Setup Guide 18
Lemur Setup Guide 19
How to know my computer’s IP address 20
AudioRain OSC Setup Guide 21
Troubleshooting 22

LINK AUDIOWIND AND AUDIORAIN WITH MIDI 23

PRESET LIST 28

TROUBLESHOOTING 29
INTRODUCTION

AudioRain is a synthesizer dedicated to the emulation of rain sounds. The synthesizer is

entirely based on Le Sound’s dynamic modeling technology and uses neither sampling nor
wavetables. That is, it produces sounds by solving, on the fly, mathematical equations
modeling the different components of the rain approximations developed by Le Sound. This
complex synthesis engine responds dynamically to the control signals it receives and exposes
high-level controls carefully mapped to the low-level synthesis model.

Procedural audio

In the video game world, procedural audio refers to the computational process of generating
audio from nothing, or almost nothing. The goal is to use almost no .wav data (pre-recorded
audio files), but rather models that generate in real-time the equivalent audio data that
would be contained in pre-recorded files.
Procedural audio has many advantages: it saves memory by using code instead of .wav data;
it’s flexible (computation can depend on all game parameters); it can lighten the burden of
specific tedious tasks (sounding hundreds of interacting objects or animations) and it brings
flexibility to the pipeline (since sound is directly linked to game parameters, changes will
modify audio generation accordingly to keep it synced, avoiding the need for sound re-
design).

System requirements

AudioRain is compatible with the following standard

*.AAX 32bits is compatible with Pro Tools 10 and AAX 64bits is compatible with Pro Tools 11 or 12. Please refer
to Avid for precise system compatibility.
INSTALLATION

Windows

Double-click on audiorain*setup.exe (or the one for the trial version) to launch installation
wizard. Click on “Next” to go to the next screen. You have to read and agree to the End User
License Agreement before proceeding. On the following screen you’ll be able to choose the
components you want to install:

- Common files regroups all documentation related to this product

- Databanks – embedded banks of sounds, they are provided as examples/demos of
what you can do with the plugin. Please do not hesitate to try your own recordings!
- VSTi 64-bit will install the 64-bit VST instrument
- AAX 64-bit: the 64-bit version of the AAX plugin for Pro Tools 11 exclusively. This
won’t work on older versions of Pro Tools. If you previously installed the 32-bit
version and switched later to Pro Tools 11, don’t forget to uninstall/remove the old
32-bit AAX (you can do the same for all your other 32-bit plugins as only 64-bit AAX
plugins will work on Pro Tools 11)

The following screens of the installer will allow you to choose custom locations for common
files, VSTi 64-bit, RTAS and AAX.

Default installation paths

Common files and databanks: “C:\Program Files\LeSound”
64-bit VSTi plug-in: “C:\Program Files\Vstplugins”
64-bit AAX plug-in: “C:\Program Files\Common Files\Avid\Audio\Plug-Ins”

You may have to install Microsoft Visual C++ redistributables. If you don’t have them already
installed on your computer, select “Yes” when the installer asks you if you want to install the
package. Otherwise, you can click on “No”. The installation is then complete.

Mac OS X

Double-click on audiorain*setup.pkg (or the one for the trial version) to launch installation
wizard. Please read and accept the End User License agreement in order to proceed. By
default, the installer is set on “automatic” mode and you won’t have anything to do, but you
can also choose a “custom” installation mode and you’ll be able to select which component
you want to install and where to install it. The different choices are:

- Common files – regroups all documentation related to this product

 - Databanks – embedded banks of sounds, they are provided as examples/demos of
what you can do with the plug-in. Please do not hesitate to try your own recordings!
- VSTi 64-bit will install the VST instrument
- AudioUnit 64-bit will install the Audio Unit instrument (for Logic and other
compatible hosts)
- AAX 64-bit will install the AAX plugin for Pro Tools 11 and above.

Default installation paths

Common files and databanks: “/Applications/LeSound”
64-bit VSTi plug-in: “/Library/Audio/Plug-Ins/VST”
64-bit AUi plug-in: “/Library/Audio/Plug-Ins/Components”
64-bit AAX plug-in: “/Library/Application Support/Avid/Audio/Plug-Ins”

Note: With the exception of VSTi, AUi and AAX plugins are universal binaries. This means
your host will automatically load the right version, depending on its architecture. For
example, if you launch Pro Tools 10, it will load the 32-bit AAX and if you launch Pro Tools 11
or 12, it will see the 64-bit AAX.

Activation

AudioRain uses iLok license activation. When you purchase AudioRain, an iLok license is
associated and you need to transfer it to your iLok. Please enter your iLok account name
while registering Le Sound.

If you encounter any problem with the activation process, please don’t hesitate to send us an
email at support@lesound.io.
AUDIORAIN SYNTHESIZER

AudioRain General Architecture

If you consider the Rain as some drops in the air, it doesn’t make sound by itself. Drops make
sounds when they touch the ground.
What we usually call rain sound is the sound generated by all the drops when in contact with
different kinds of surfaces. The number and type of impacts of the drops is also modulated
by the wind.

The chosen model tries to simulate all the above mentioned aspects and give access to some
of the simulation parameters:

 First of all we model the Rain Behavior through its instantaneous strength related to
the wind. The strength is injected in the rumble module. Consequently, this module
will generate sounds that can depend on the global instantaneous speed.
 The Rumble module synthesizes the drops when they hit a hard surface.
 The Shower module synthesizes the background sound of the rain.
 The LiquidOne module synthesizes the sounds of drops when they hit softer surfaces
including water (on a puddle for ex.).
 The LiquidTwo module also synthesizes liquid sound and can be use for the sound
generated by water running on the ground.

The influence of the rain strength on the rumble module can be control by a local/global
slider.
 When the global/local slider is up, the rumble sound is modulated by the wind.
 When the global/local slider is down, the rumble sound is modulated by an internal
source controlled by the Density knob.
Global Rain Behavior

The rain behavior block controls the Instantaneous rain strength.

Instantaneous rain strength is a mix between the manual “control” knob and the
automatically calculated speed adjusted using the 4 knobs of the auto section.
Automatically calculated speed is driven by Attack, Rate, Min and Max knob.
The Manual/Auto slider drives the mix:
 When it is up the instantaneous speed is driven by the control knob. Use this scenario
to automate precisely the rain strength.
 When it is down the instantaneous speed is automatically calculated. Use this
scenario to create a “living” rainy atmosphere that can evolve freely in the limits you
have chosen.
 By putting the slider anywhere in the middle positions, you’ll generate a “living” rainy
atmosphere, but keep some control depending on the position of the slider (the
closer to manual the more control you get and conversely).

Strength: Manual Control of rain strength

Actual Strength: Allow to see the amount of Instantaneous rain
strength.
Manual/Auto slider: Mix between manual control and automatic
control of rain strength
Attack: Attack time ratio for the automatic control of rain strength
Rate: Variation Rate for the automatic control of rain strength
Min: Minimum Amplitude for the automatic control of rain strength
Max: Maximum Amplitude for the automatic control of rain strength
Refresh: Allows you to reset the rain cycle from its starting point.
Rain Synthesis Components

Rumble

The Rumble module synthesizes the drops when they hit a hard surface.

Global/Local slider: Mix between global rain behavior and local Rumble
behavior: setting it to "global" will make the Density knob ineffective as
it will be controlled by the global source

Density: Rumble Density (unused when density is driven by the rain

behavior)

NotchQ: Rumble Notch Q factor

Level slider: Main Level of the Rumble

HiCut: Rumble low-cut filter frequency
LoCut: Rumble high-cut filter frequency
Shower

The Shower module synthesizes the background sound of the rain.

Color: Shower Color

Level slider: Main level of the Shower

LowCut: Shower low-cut filter frequency
HighCut: Shower high-cut filter frequency
Liquid One

The Liquid One module synthesizes the sounds of drops when the hit softer surfaces like
water (a puddle for ex.). It can synthesize liquid sound and can be used for the sound
generated by running water.

Density: Amount of Drops per time unit for Liquid 1

Color: Drops Color for Liquid 1

Visc.: Drops Viscosity for Liquid 1

Min: Drops Tone low bound for Liquid 1

Max: Drops Tone high bound for Liquid 1

Level slider: Main Level of Liquid 1

LoCut: Liquid 1 low-cut filter frequency
HiCut: Liquid 1 high-cut filter frequency
Liquid Two

The Liquid Two module synthesizes the sounds of drops when the hit softer surfaces like
water (a puddle for ex.). It can synthesize liquid sound and can be used for the sound
generated by running water.

Density: Amount of Drops per time unit for Liquid 2

Color: Drops Color for Liquid 2

Visc.: Drops Viscosity for Liquid 2

Min: Drops Tone low bound for Liquid 2

Max: Drops Tone high bound for Liquid 2

Level slider: Main Level of Liquid 2

LoCut: Liquid 2 low-cut filter frequency
HiCut: Liquid 2 high-cut filter frequency
LFE (Low Frequency Effect)

LFE: Main Level of the Low Frequency Effect

LFEHighCut: Low Frequency Effect highcut filter frequency

Master

Level: knob control the main volume of the generated rain sound
Compute Sound: activate/de-activate synthesis
Preset Manager

The preset manager allows you to do every basic preset operation, from the obvious « save »
to the « import » preset files. So, you can easily create your own bank and manage it the way
you want. Here’s a quick overview of what you’ll be able to do and how!
When you’ll first open your new Le Sound plug-in, you’ll probably open some factory presets.
Simply double click a factory preset to load it. Get mad and turn every single button from the
min to the max value. Don’t worry, we all do that. However, if the rain goes too wild or if you
want to go back to a clean preset you can double click the default preset to go back to the
default state. It’s very useful to start a new preset from nothing. Once you’ve sculpted the
sound you were looking for, simply click on the “New Preset” button, enter some text in the
popup window that appears, and your own settings will be saved. (Please remember that
your custom presets only exist in the scope of your current session, it will only be
permanently saved if you save the project inside your host and re-open it later. Any saved
presets inside an un-saved project won’t be restored)
To access to preset menu, perform a right-click on any of the slots. You’ll find different
options described below:
 Load: Loads the selected preset (Sets the different knobs
values from the preset). You can also double click directly on an
existing preset.
 Save: As soon as you get the best rain sound ever, press the
save button to keep your amazing settings safe in the manager.
A little box appears and allows you to give a very useful preset
name (“BestRainEver” for ex.). Once you press ok the currently
selected preset will be overwritten. Beware, if you don’t want
to lose the currently selected preset, prefer using the “New
Preset” button, in order to save your preset in a new slot
without overwriting any previously saved preset.
 Rename: You may have guessed what this does? Just in case: it renames your preset
(yes you can). It’s very useful if you want to organize your preset library and make it
clear.
 Import: Import preset files from the location you choose on the disk. The standard Le
Sound preset extension is “.ag”.
 Export: If you want to be able to use your best presets in different projects, just hit
export and choose the disk location where you want to stock it. Note that the export
function only exports the saved state of your preset. If you have un-saved settings,
you first have to save them to your preset in the manager before exporting.
 Delete: Erase the name of the preset and rename it as an “Empty slot”.

For a factory preset, you’ll only be able to Load or Export the preset, as well as the following:
Duplicate as new User Preset: Creates a copy of this factory preset inside the category “User”.
It will keep the original name but you can rename it just after the copy is done.
Random

Located on the right upper corner, “Random” generates a new random parameter setting
(preset). You can click on the button as much as you want until you hear a sound that suits
you.

Menu Options

Click on the “MENU” button to see several options:

 The audio options: Here you will be

able to manage several parameters
related to the audio output. First,
the MIDI part allows you to
manage the midi output of
AudioRain. Indeed, you have the
possibility to use the shape of the
wind to generate midi values and
associate them to either the
modulation or the pitch wheel
parameter of another plugin. You
choose the midi channel you want
to send the midi information to (channel 1 to 16). Example: Open AudioRain in your
favorite DAW. Open a midi track. Choose AudioRain as midi in. Connect another plug-
in to the midi out. Choose the channel 1 and the modulation control.
“Enable sound computing only when host’s “Play” button was hit”: when the tickbox
is checked, sound will be produced only when your host is playing. When you hit
“Stop”, sound computing will stop too. By default, this tickbox is unchecked so you
should always hear sound.
“Speakers configuration”: here you can select your favorite mapping for your outputs.
Be sure to have configured your host correctly if you have a surround system, so that
your ouputs are mapped correctly. If your system only has two outputs, you will only
be able to select “Mono” or “Stereo” for instance. The combobox allows you to
switch between “Music” or
“Cinema” mapping for surround
systems.
 Presets: There are several options
available. The first one, “Import
.agbank package”, allows you to
select on your disk an official Le
Sound package (whose extension
is “.agbank”), containing a set of
new presets. A new category will
automatically be created in the
Presets Manager.
 The option “import .agp presets” allows you to select multiple .agp files and import
them in the Preset Manager, by automatically filling the first empty slots that are
found. If you don’t have any free slot ready, you’ll have to delete some presets before
proceeding. The last option, ‘export all presets” asks you to select a directory on your
computer, where the whole set of presets will be saved as separate .agp files
(including the factory presets)
 About us: Useful (or not) information about our amazing team!
OPEN SOUND CONTROL
AudioRain is an OSC friendly plugin, meaning that you can use any OSC enabled device or
software you want to control it. We also provide fully functional templates for TouchOSC
users on iPad.

You can find the files on http://lesound.io/related-downloads/

TouchOSC Setup Guide

The following guide covers the installation and configuration of TouchOSC on iPad for
AudioRain.
TouchOSC is an OSC app available on the App Store. Search it in the App Store or go to
hexler.net to download it on your computer. Once the app is installed, please plug your iPad,
start iTunes and go to your device’s “Apps” tab Scroll to the File Sharing section where you
will find a list of Apps. Select TouchOSC from this list and a new list of TouchOSC related
document should appear. You can now add the AudioRain template by dropping it into that
list or by clicking the Add button.
Next you will need to start TouchOSC on your iPad and tap on the OSC row in the Connection
section and turn the Enabled switch on.

The host should be the IP address of the computer running AudioRain, please scroll to the
next section if you don’t know how to find your IP address. AudioRain is, by default,
configured to send on port 8000 and receive on port 9001.

You can of course customize the ports to be used. Please make sure that those ports are not
already occupied by any other process on your computer and to reflect your configuration in
the AudioRain preferences (see below). Once the configuration is done, go back to the main
menu in TouchOSC and tap the Layout row. The AudioRain template should appear in the list,
tapping it will make it the current active template.
The TouchOSC configuration is now over you can go back to the main menu and tap the Done
button in the upper-right corner of the iPad.

Lemur Setup Guide

The following guide covers the installation and configuration of Lemur on iPad for AudioRain.
Lemur is an OSC app available on the App Store, you can search the App Store or go to
liine.net to download it on your computer. Once the app is installed, please plug your iPad,
start iTunes and go to your device’s “Apps” tab Scroll to the File Sharing section where you
will find a list of Apps. Select Lemur from this list and a new list of Lemur related document
should appear. You can now add the AudioRain template by dropping it into that list or by

clicking the Add button.

Next you will need to start Lemur on your iPad and tap on the gear icon in the upper-right

corner of the screen and tap the More settings… row

In the OSC section, tap the Add Target and fill the Host field with the IP address of the
computer running AudioRain, please scroll to the next section if you don’t know how to find
your IP address. The incoming port of the Lemur app is set to 8000 and can’t be changed, you
can only customize the outgoing port which should be set to 9001 if you want to use
AudioRain’s default port configuration. If you want to use another outgoing port, just make
sure that this port isn’t already used by any other process on your computer and to reflect
your configuration in the AudioRain preferences. When you’re done, your OSC Targets should

look like this:

Tap the Done button to close the Settings panel and once again tap the gear icon in the
upper-right corner of the screen and tap on the Project row. The AudioRain template should

appear in the list and tapping it will make it the current active template.

How to know my computer’s IP address

If you’re a Mac user click to the Apple icon on the upper-left corner of the screen and select
System Preferences. Go to the Network button which should be on the third row and your IP
address should appear.

If you’re a Windows user, click the Start button, open the Control Panel and go to Network
and Internet, then go to Network and Sharing Center. You should see your network under
View your active networks. Click the name of your network next to the Connections label on
the right and then go to Details. Your computer’s IP address should appear in the value
column next to IPV4 IP Address.

AudioRain OSC Setup Guide

To enable OSC, open AudioRain preference by clicking the Menu button. Go to the OSC and
check the Enabled box, the Remote IP field and Port should now be editable. The Remote IP
should be the IP Address of your iPad which can be found in the configuration page of both
Lemur and TouchOSC we have seen previously. If you are having trouble finding this IP you
can still open the Settings app on your iPad, go to the Wi-Fi tab and tap the blue arrow next
to the network you’re currently connected. If you configured Lemur or TouchOSC with our
default port values, you shouldn’t need to go any further. Otherwise, make sure you reflect
the exact same port configuration on both the computer and the iPad.

Congratulations! Now you should be able to control AudioRain with your iPad !
Troubleshooting

If you followed this guide but still aren’t able to control your AudioRain, you can try the
following suggestions:

- Try another port configuration.

- Try closing other programs that are currently using your network.
- Try to reboot devices, maybe a process is still bound to the port you’re trying to use.

If you’re still experiencing troubles please do not hesitate to contact us.

LINK AUDIOWIND AND AUDIORAIN WITH MIDI

AudioWind and AudioRain allow the use of their Global Control parameter to generate MIDI
values and associate them to either the modulation or the pitch wheel

-Add two tracks in Reaper

-Insert AudioWind in one track and AudioRain in the other
-In AudioWind go in Menu/Midi Options

-Tick Enable Midi Output

-Select your MIDI Message (Mod Wheel or Pitch Wheel)

-Select your MIDI Channel

-On AudioWind Track click on I/O

- Add a Send to AudioRain Track

- Select: Audio: None and Midi: Your channel (same as the one you selected in AudioWind)

-On AudioRain Track insert ReaControlMIDI plug-in

-Select your MIDI Channel

-Click on Showlog to check if you actually receive MIDI informations
-In Control Change section tick Enable
-In Control Change again, select in a box your AudioWind MIDI parameter (Mod Wheel or
Pitch Wheel)
-Check if the slider move when you move Global Control in AudioWind (if Global Control is
Auto, slider will move automatically).

-Now display AudioRain plug-in window

-Click on Param on the top of the plug-in window
-Go to FX Parameter List/Parameter modulation and select the AudioRain parameter that you
want to control with AudioWind.
-Pop-up window will open
-Tick Enable parameter modulation
-Tick Link from parameter

-And select ReaControlMIDI/Mod Wheel

-Your AudioRain parameter is now linked with AudioWind Global Control

MIDI Link works with AudioRain Global Control

PRESET LIST
 Monsoon High
Inside  Storm
 Umbrella Low
 Umbrella Med
 Umbrella High Waterfall / torrent
 Covered Playground Low  torrent
 Covered Playground High
 Car Low
 Car High
FX
 Log Cabin Low  Make Me Wet
 Hot sausage
 Log Cabin Med
 Singin' in the Rain
 Log Cabin High
 Plane in the sky
 Radio Interference
Outside  ET Radio
 Jungle Low  Psychedelic Rain
 Jungle Med  Geiger
 Jungle High  pipe
 City Low  pressure
 City Med  Plastic pipe
 City High  Acid Raindrops
 Lake Low
 Lake Med
 Lake High
Tutorial
 Move Global Manual Control
 Mountain Low
 Move Global Attack & Rate
 Mountain Med
 Move Rumble Density
 Mountain High
 Move Shower Color
 End Rain
 Summer low  Move LiquidOne Visc
 Move LiquidTwo Density
 Summer Med
 Summer High Countryside
 Autumn  Balcony Symphony
 Winter  Cottage Drops
 Village Low  Danger Flood
 Village Med  Hardly a Shower
 Village High  Makeshift Shelter
 Under Tree  Outside Tarps
 Park High
Strong rain  Park Med
 Shower Low  Park Low
 Shower Med  Under Tents
 Shower High  Wet Leaves
 Monsoon Low
TROUBLESHOOTING

About sample rate and block size

If you encounter audio problems, such as noise, please check your host configuration.
AudioRain should work with any block size. In most hosts it is not possible to configure the
block size, but you can in hosts such as Reaper or Pro Tools. If you are using a high sample
rate like 96kHz, make sure that the block size is high enough. In Reaper, for a sample rate of
96kHz, the block size should be at least 512 samples. Below that, you might hear noise.