As a hobby I am dealing with electionics in my freetime and now I want to build a 10 band equalizer for a 3.5mm audio jack to equalize the output of my computer. I was looking around for a 5 band graphic eq IC which I wanted to use four time to get a 10 band stereo graphic eq and I found the LA3600 (If you now a diffrent IC please let me know). I looked in the datasheet and found a circuit diagram (page 4) which was just what I looked for, before I had this idea I delt with passive filters and as far I know analog grahpic equalizer just uses those to filter the frequency out that is needed but in this circuit diagram I was just looking for such a filter, but what I seen weren't any filters I now and I coudln't find anything to this circuit in the net. So now I am asking you how this is IC is doing it.
To determine the resonance frequency you need the formular but wouldn't this interrupt the High/ Low pass filters? Because you need a certain Capacity to filter out a certain frequency but do you just match the Capacity un the formular just by try and fail? And when it just gets the frequency you need you found out the cap value?
sorry if a question is dumb, I just working on understanding this since 3 days and I just fail, maybe someone can explain me how to use the IC right.
To determine the resonance frequency you need the formular but wouldn't this interrupt the High/ Low pass filters? Because you need a certain Capacity to filter out a certain frequency but do you just match the Capacity un the formular just by try and fail? And when it just gets the frequency you need you found out the cap value?
sorry if a question is dumb, I just working on understanding this since 3 days and I just fail, maybe someone can explain me how to use the IC right.
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