Hello, I need a circuit for building a volume low-pass filter. why? The problem is that every time there is a commercial on TV they increase the sound level. I want to combat this by building a maximum sound cap limit (adujstable via Pot.). It should work on all frequency and should not reduce sound for any db lower then the cap limit. Now the best version of this is that the cap is automaticaly based upon the avarage volume, so this will work in every sound levels (meaning cap = normal sound+10db, for example). But it this is too complicated then a fixed cap with pot. will be enough.
Since I have only very basic knowledge of electronics, a reference to a detailed site will be nice. Thank!