Are there are any VSTs that automatically remove the main harmonic content from an audio source?
For example: if I have a simple sine wave this VST would return absolutely nothing, silence.
If the sine wave has been previously distorted a bit, then this device would return at least some of the noise produced by the distortion, omitting the frequency of the original sine wave.
What I am looking for is a tool that does not only automatically remove one single frequency, but a set of frequencies that might be harmonically related. For example, passing a pure sawtooth trough the device would also return silence.
I think that a device like this has to exist already. Any ideas?