Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!haven!uvaarpa!mcnc!thorin!pooh!rohlf From: rohlf@pooh.cs.unc.edu (John Rohlf) Newsgroups: sci.electronics Subject: Tone control transfer function Message-ID: <9723@thorin.cs.unc.edu> Date: 28 Sep 89 22:53:07 GMT Sender: news@thorin.cs.unc.edu Lines: 36 I need the transfer function for the basic 3-band tone controls diagrammed below: C1 in------------| |------- | | Treble < < Pt R1 > ><-----out < C2 < |_____| |______| | | | < Bass | > Pb | C3 < |_____| |______| | < Midrange > Pm < | ----- --- - Additionally, consider 2 cases: 1. The circuit is buffered by op-amps. 2. The circuit input is a high-impedance tube output and the circuit output is buffered. Instead of a full transfer function, I imagine that good approximations for the individual transfer function of each band would be more useful since I just want to tweak things intelligently. Thanks in advance, jr