The Nature Pack is a plugin for Unreal Engine featuring 6 fully procedural sound effects models (all sounds generated on
the fly, no stored samples) for popular Nature sounds;
Droplets, Fire, Rain, Waves, Water, and Wind. The plugin also provides over 50 presets for you to chose from.
These models are implemented as Blueprint-Spawnable classes that can generate sound effects in real time, completely
procedurally. Each model offers various functions to change
the parameters of the sound effect at runtime. Hence the parameters can be linked to any in-game events, which can lead
to very organic and interesting results.
The models are wrapped in USynthComponent classes, an unreal engine base component. So our sound models are usable
anywhere where USynthComponent is usable.
This means that any model can be added to almost any element in your scene, instantly turning it into a procedural sound
effect generator.
It also allows you to design your sound exactly how you want it, directly inside the editor.
After purchasing the plugin from the marketplace, you can install it using the Epic Games launcher. To use the plugin in a project, it must be enabled first. In the Unreal Editor,
go to Edit->Plugins and type "Nemisindo" in the search bar. Locate the Nature Pack and click "enable". Restart the editor for the changes to take effect.
The plugin’s UI can be accessed by clicking the Nemisindo button in the Editor toolbar, or going to Window → Nemisindo. It will let you preview our models to check what they sound like
before adding them to a blueprint.
Warning : The UI might take a few seconds to load the first time you use the plugin.
To add a sound generator to a blueprint, click on “Add Component”, then scroll down to “Procedural Sound Effect” (or alternatively search for SFX). There you will see all the different
sound generators and their presets. You can add as many as you want to a blueprint. Presets are copies of the default models, but their parameters are already setup with specific
values to produce a certain sound.
Each model provides some parameters to control certain aspects of the sound. Once a model is added to a blueprint, the parameters will appear in Details Panel->Settings.
You can hover over them to get more information. If you cannot see the parameters in the details panel, make sure you have the model selected in the Components panel.
Example - The parameters of the Rain model :
Important: These settings are "Default parameters". Meaning they only dictate the values that the model will use when the game starts,
and cannot be changed directly at runtime. To change model parameters at runtime, check the section called Parameter Functions.
The “Start” function must always be called at some point in order to generate sound.
This is a default function from Unreal Engine's USynthComponent class, and it must be called at some point to initialise the synthesizer.
Here, this is linked to a “Begin Play” event, meaning that the Waves will start as soon as the actor is spawned in the level:
Our sound models will keep producing sound indefinitely until "Pause" or "Stop" is called:
If you'd like to temporarily mute a model, use Pause. To restart a paused model, use Resume.
If you'd like to completely stop a model, use Stop. Note that this will also reset the model to its
default state and clear the sound generator from the memory.
We advise linking Stop to the event "End Play" for extra safety,
and using Pause if you know that the sound generator will get restarted at some point.
All models provide functions to change the sound parameters at runtime. This makes linking parameters to in-game events very easy.
The functions related to the models in your blueprint can be accessed by right-clicking in the event graph and scrolling down to (or searching for)
“Procedural Sound Parameters”.
Unreal Engine’s built-in post-processing effects can be applied to all models. We specifically recommend using spatialization and reverb.
Spatialization can be enabled in the details panel of the sound effect model.
Reverb and other effects (delay, distortion) can be applied using audio volumes and submixes, just like with any regular sound asset.
Important: Because models are not an audio file, the spatialization sphere will not show up automatically. As a work around, you can add
an empty audio component to your actor, and apply the same attenuation settings to both:
