Nose-Based Synthesizer on UnityEditor, based on xNode.
GitHub - Siccity/xNode: Lets you view and edit node graphs inside Unity
https://github.com/Siccity/xNode
Unity Version
Unity 2018.3.0f1
Usage
Create SoundGraph
Right click on Project window,
select Create/SoundGraph.
The following is a SoundGraph asset.

Open SoundGraph
To open SoundGraph asset, double click SoundGraph asset.
Double clicking SoundGraph asset will open xNode Window.

Create Sound
To create sound, you must create Oscillator and Output Node.
Create OutputNode
Output Master node output sound to speaker.
Right click and select Sound Node Graph > Output > Output Master

Create Oscillator Node
Sine Osc node generates sine wave.

Right click and select Sound Node Graph > Generator > Sine Osc
Output Sound
Connect Sine OSC node and Output Master node.




