What is a VST Plug-In?
Steinberg created the VST plugin standard and introduced it with their Cubase VST audio sequencer product line. Quoting from the Steinberg VST SDK: “In the widest possible sense a VST-Plug-in is an audio process. A VST Plug-in is not an application. It needs a host application that handles the audio streams and makes use of the process the VST plug-in supplies. Generally speaking, it can take a stream of audio data, apply a process to the audio and send the result back the host application. […]: The host does not maintain any information about what the plug-in did with the last block of data it processed. From the host application’s point of view, a VST Plug-In is a black box with an arbitrary number of inputs, outputs, and associated parameters. The Host needs no knowledge of the plug-in process to be able to use it.” What is the difference between VST1.0 and VST2.0? VST 1.0 was (obviously) the first version of the VST standard Steinberg created. It supported only creation of effect
