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A comment on Chiptunes on an ATtiny4 and the 3 Cent Micro. Parent comment

Re:Chiptunes on an ATtiny4 and the 3 Cent Micro by 8bitsrule on Wednesday May 05, 2021 @01:26AM (#27046520)
A passive filter (if you've got the headroom) doesn't have to be fancy ... just a capacitor and variable resistor will let you custom-mellow the excess highs. (Old radios had these for 'tone control' ;-)
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Re:Chiptunes on an ATtiny4 and the 3 Cent Micro by exDM69 on Wednesday May 05, 2021 @06:20AM (#27048168)
Yes, a little low pass will make a square wave much more pleasant to the ear.

But a proper LP/HP/BP resonant filter is almost a musical instrument in itself.

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