[sdiy] removing dc offset

[Ingo Debus]

Am Sonntag, 05.06.05 um 09:51 Uhr schrieb gregory zifcak:

> this is what i was doing, but i have to use a cutoff frequency of 
> about 300 hz to substantially reduce the dc. i'm assuming this is 
> because the 6db slope is just not steep enough.
> i guess that because the toy originally used a small internal speaker, 
> they didn't need to worry about the dc. i've added an output and i'm 
> worried about damaging speakers with the thump.
>

Ah, so you are worried about the thump, i.e. the sudden step in dc 
voltage, not the dc itself.

Perhaps a relay in series with the output would help, which is turned 
on delayed?

Ingo