DDS (generating sine waves) with onboard DAC using latest PIC 16F chips?

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  1. - 27th August 2011, 18:14 #31
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    HankMcSpank
    HankMcSpank is offline Senior Member
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    Default Re: DDS (generating sine waves) with onboard DAC using latest PIC 16F chips?

    Quote Originally Posted by Darrel Taylor View Post
    80Khz?

    CD audio has a 44.1khz sample rate.
    If it doesn't sound right at that frequency, the problem probably isn't the interrupt rate, and faster won't help.
    A good point well made Darrel (a case of getting too wrapped in something & forgetting the obvious! ) - need to dabble more, but certainly doubling the interrupt rate made the higher frequency output waveform look a lot less steppy on the scope! I've no output filter on this yet...just the raw R2R ladder output.
    Last edited by HankMcSpank; - 27th August 2011 at 18:17.
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