Has anyone got the formulas for calculating phase of 1st-4th order active/passive low/high pass filters? (including peaking 2nd order HP filters used for bassboost/EQ circuits). Also I need formulas for phase of parametric EQ circuits. This is so I can calculate the group delay from it and put it in a spreadsheet I have been making which models various alignments, etc. If anyone can supply these, it would be greatly appreciated!
Wayne Parham Messages: 18792 Registered: January 2001
Illuminati (33rd Degree)
The formula for finding phase is in the PiAlign document and also in the handout for the "Electronics 101" seminar. You might also want to do a search here for "phase," because there is a lot of information stored in the archives of this forum.
Wayne Parham Messages: 18792 Registered: January 2001
Illuminati (33rd Degree)
A port in a bass-reflex loudspeaker cabinet forms a Helmholtz resonator. It acts very much like an LC tank circuit. Since the woofer is also a resonator and its frequency is close, the two systems are tightly coupled.
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