the VST Protocol defines a simple method for implementing DSP
algorithms for host CPU based audio systems. It allows signal processes
to be very quickly developed avoiding much of the OS dependent issues
or very specific DSP chip programming schemes. The result is that both
writing and using a VST Plug-in is very easy compared with other
new in VST 2.0?
after its first introduction, the VST Plug-in group was a rich source
of ideas on how the VST-Plug-In specification could be extended. When
other companies started to host VST Plug-Ins, the ideas for extensions
on the host side grew too. The VST 2.0 Specification is the result of
combined consultation, and builds on the VST 1.0 spec to bring about
some exciting new possibilities.