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Multiple Feedback Filter Design doubt
Multiple Feedback Filter Design doubt
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Old 28th July 2015, 10:14 PM   #1
Thiago Roque is offline Thiago Roque  Brazil
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Join Date: Feb 2014
Location: Campinas, SP
Default Multiple Feedback Filter Design doubt

Hello!

Ive just tried to implement a speaker simulation here. But the low pass circuit is just adding to much noise.

Well... Im not very experienced with analog filter design, so I must be doing something wrong here....

At first I thought the noise was comming from the BJT buffer, but after some tests I realised it was coming from the multiple feedback low pass filter.
I dont think it shoud be that noise...

Any hints?
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