I want to build a four band "fully parametric" shelving EQ. In other words I'd like to have a shelving EQ that has variable bandwidth (slope but I dislike that term as applied to shelves) in addition to frequency select and gain. I like shelving EQ's and use them quite often. I've played around a little with the DMG Equilibrium EQ plugin which can have this feature. I think it is worth pursuing.
The first question I have is what topology would you choose? From what i can gather a State Variable Filter wouldn't make this straightforward as to get a shelf you have to combind the filter output(s) with the bandpass output.
The T-Filter (Sontec) type shelf sounds great but I'm not sure is variable bandwidth is practical for a shelf.
What would you do?
The first question I have is what topology would you choose? From what i can gather a State Variable Filter wouldn't make this straightforward as to get a shelf you have to combind the filter output(s) with the bandpass output.
The T-Filter (Sontec) type shelf sounds great but I'm not sure is variable bandwidth is practical for a shelf.
What would you do?