Who invented the dynamic EQ

[amagras]

Originally Posted by paulo m

In most dynamic EQ´s that I´ve worked with, you have a threshold that determines when the EQ curve will start to be boosted or cut depending on the setting, but despite you having a cut or boost at the chosen frequency curves, you don´t have a compression ratio, which is one of the basic principles of compression. So you´re just cutting or boosting as in a normal EQ, with the difference that the process is automated by the threshold, with some plugins also having an attack and release setting etc.

Now my question is why it doesn't have a ratio knob? Is it because it's considered not relevant enough in Dynamic EQs or just impossible to implement? For what I understand, the difference between a dynamic EQ and a multiband compressor is the placement of the detection circuit, which being independent from the signal path in the case of the dynamic EQ it make possible to avoid splitting the signal with the multiband, but from this I don't see why it wouldn't be possible to add a ratio control.