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Old 9th July 2007, 02:43 PM   #1
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Join Date: Jul 2007
Default Audio band pass filter.

Hi, first post here at diyAudio, hope to contribute in the future.

I'm trying to build something like this: http://www.youtube.com/watch?v=lWTPD...elated&search=

I was thinking in building several band pass filters(to feed into a pic's ADC) one for each column, first of all do you think this is the way to go? If so I've looked for some opamp based active filter designs and i think the biquadratic design is best because it only needs one opamp: http://www.ecircuitcenter.com/Circui...B_bandpass.htm
My question is basicly if this is well suited enough for the job, for 16 columns I'll need 16 filters located across the audio spectrum, if the Q factor satisfactory with this design to provide enough contrast? I've tried to simulate several configurations with multisim but I must be doing something wrong because the AC analysis is completely incoherent

I'm quite new to filters and just looking at it is a bit daunting, but hopefully I won't need to know their in and outs.

Thanks
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