Synth-based VST plugins can help you get sounds that are similar to the ones created by instruments as well as the environment. A piano is a large instrument that you possibly cannot lug around wherever you go. Therefore, VST plugins make for great alternatives that give you the right sound quality coupled with convenience. Review of The Best Trap VSTs Plugin. Creating trap music requires an understanding and incorporation of multilayered instruments. They include synthesizers, snares, kick drums, woodwinds, keyboards and some atmospheric rhythms.
Welcome! In this tutorial series we will be learning how to create audio plugins that run as VST, VST3, AU, RTAS, AAX or as a standalone application.
Audio plugins are programs that are loaded into a host software (such as Ableton Live, Logic or REAPER). They process Audio and/or MIDI data and can have a graphical user interface. Here are three examples (U-He Zebra, Sonalksis FreeG and D16 Decimort):
As you can see, the GUI usually contains some controls (the knob being the most common) that change how the plugin processes incoming data. A plugin has presets (in the screenshot they’re called Combo and Emulator) that store all knob positions and other values.
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We’ll start with a simple distortion plugin. After that, we’ll create this subtractive synthesizer plugin step by step:
We will use C++ and the WDL-OL library. It is based on Cockos WDL (pronounced whittle). It basically does a lot of work for us, most importantly:
- Ready-made Xcode / Visual Studio Projects
- Create VST, AudioUnit, VST3 and RTAS formats from one codebase: Just choose the plugin format and click run!
- Create 32/64-Bit executables
- Make your plugin run as a standalone Win/Mac application
- Most GUI controls used in audio plugins
It also gives you most GUI controls used in audio plugins, and some commonly used audio algorithms like for example resampling. This forum thread has screenshots of a lot of plugins that were done using WDL.
The different plugin formats all do more or less the same, so normally there would be a lot of copy & paste in your code. As a programmer you want to stay DRY, so sooner or later you’d write an abstraction layer over the different formats. This work has already been done in the form of IPlug, which is a part of WDL. These are the annoying parts of audio plugin development, so we can now focus on the fun stuff, such as:
- How the plugin processes incoming Audio/MIDI
- What the plugin looks like
- How it integrates with the host (automation, presets, etc.)
Another good thing about WDL is its permissive license: You can use it freely for commercial applications. See the links above for details.
How we will do this
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The chase is better than the catch.