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| The latest audio board. edit: added output caps, fixed input caps. |
I also applied my newfound groundpour abilities to the board.
I've got a few little issues on this, but I'm pretty certain I'll be adding a component or two before it's done.
Sunday, January 16, 2011
Audio Board Again
Spent a few hours today reworking the audio board. I've learned that digital devices want an audio signal that's not referenced to 0V. Makes sense if you think about it, they only work in the positive domain, so an audio signal that spends half of it's time below 0 isn't going to be happy. My current solution is to simply add 2.5V DC to the signal, the 2.5 I was already generating for the inverting input on the single-supply op amp. In theory this will center the signal between ground and VCC.
I also applied my newfound groundpour abilities to the board.
I've got a few little issues on this, but I'm pretty certain I'll be adding a component or two before it's done.
I also applied my newfound groundpour abilities to the board.
I've got a few little issues on this, but I'm pretty certain I'll be adding a component or two before it's done.
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