Can polarised electrolytic capacitors be used to make high/low pass filters?

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Resistanceisfutile

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I want to make a SIMPLE low pass filter for an audio circuit, something similar to this:
https://en.wikipedia.org/wiki/Low-pass_filter#/media/File:RC_Divider.svg

I have some ceramic caps but they are low capacitance so I have to use high value resistors and then I get no sound (current too low?)

Could I use electrolytic capacitors to make a simple low pass filter?
Would I have to bias the audio signal?
 

An electrolytic capacitor is inaccurate because it has a wide range of tolerance. So if it is rated at 100uF then it could be anywhere from 50uF to 200uF. A polarized capacitor should never have reversed polarity.
You got no sound because the low input resistance of what the high resistance filter is driving created a voltage divider. The RC filter should have a very high load resistance.

Usually an RC lowpass filter uses a high value resistor and low value reasonably accurate small capacitor (5% film) then it is followed by a very high input resistance opamp.
 

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