how to build amplifier for dspic33F32GP

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angelita

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hi guys

i want to process human sound using dspic33f32GP202
im new in all of this
so how i know if i need to build amplifier before the signal be entered
or not ..how i know if i need filter or not


what is the right way to build the amplifier and filter that match what i want
help please
 

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