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Type: Posts; User: mxxx

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    Jerware: looking at your sketch again, i see...

    Jerware:

    looking at your sketch again, i see you had put in the line: dac.analogReference(INTERNAL); but it's commented out.

    so i assume you have tried? i assume it makes no difference?
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    mmh, at 345 Hz it doesn't seem like it's...

    mmh, at 345 Hz it doesn't seem like it's something easily filtered out.

    i'm wondering what the source might be? the bursts are a little over 600 us, it seems; track the audio engine (somehow),...
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    true, the other odd thing is what happens when...

    true, the other odd thing is what happens when the second file starts, which isn't even played through the DAC:


    3525

    it then settles into a similar pattern, only now there's two of those 28...
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    i wonder what i might be though. on second...

    i wonder what i might be though. on second thought, the sd player objects wouldn't actually access the card every 2.9ms, no? one sector = 2 x sample buffer. so it's weird that 344 Hz would bleed into...
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    ah, ok. no clue what might be going on, i'm...

    ah, ok. no clue what might be going on, i'm afraid. i would have speculated the 3v3 rail might take a plunge every 128 samples or so, but Cosford says it's rock solid.

    flash memory = W25Q128FV, i...
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    true, weird that it happens every 2.9ms ( it...

    true, weird that it happens every 2.9ms ( it does, right ?). but in that case it should be noticeable when using a/the codec, too, no? jerware seems to say though the audio board plays fine; i...
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