[sdiy] removing dc offset

Scott Gravenhorst music.maker at gte.net
Sun Jun 5 00:10:36 CEST 2005


Are you using a capacitor in series with the output as a DC blocking
capacitor?  It needs to be larger for lower frequencies to pass through
it.  It's really a simple highpass filter, so the larger the cap, the
lower the cutoff.

>--- gregory zifcak <zifcak at hotmail.com> wrote:
>
>> hi,
>> i am modifying a toy that has very rich bass, but due to the fact
>> that it is 
>> run from a single battery supply, there is a dc offset. i've tried
>> filtering 
>> this with caps of various sizes, but i can't seem to get rid of the
>> offset 
>> without getting rid of the bass. is there a simple way to do this?
>> thanks for any suggestions,
>> greg
>> 
>> 
>> 
>
>
>		
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