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Thread: Teensy 4.1 and Audio board at 96 kHz sampling rate?

  1. #1

    Teensy 4.1 and Audio board at 96 kHz sampling rate?

    Good day,

    Is it possible to run the Audio board at a sampling rate of 96 kHz with the Teensy 4.1. Would it be as simple as setting the correct registers on the SGTL5000?

    Kind regards,
    Jaco

  2. #2
    Good day,

    Also, how does one disable the dithering of the SGTL5000 on the Audio board?

    Are there C commands that I can use to set registers on the SGTL5000? (I assume the commands similar to "adcHighPassFilterDisable(); " set registers on the SGTL5000 ...)

    Also, where can I see how "AudioConnection" is implemented? Is AudioConnection a buffer/queue, or is it set up as DMA?

    Thanks,
    Jaco

  3. #3
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    Quote Originally Posted by Jaco Versfeld View Post
    Good day,

    Is it possible to run the Audio board at a sampling rate of 96 kHz with the Teensy 4.1. Would it be as simple as setting the correct registers on the SGTL5000?

    Kind regards,
    Jaco
    Yes, see https://forum.pjrc.com/threads/52798...l=1#post181609
    this was done for T3.x but shows method.

  4. #4
    Senior Member
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    Quote Originally Posted by Jaco Versfeld View Post
    Good day,

    Also, how does one disable the dithering of the SGTL5000 on the Audio board?

    Are there C commands that I can use to set registers on the SGTL5000? (I assume the commands similar to "adcHighPassFilterDisable(); " set registers on the SGTL5000 ...)

    Also, where can I see how "AudioConnection" is implemented? Is AudioConnection a buffer/queue, or is it set up as DMA?

    Thanks,
    Jaco
    not sure, if there is dithering.
    SGTL commands are found in Audio library. AudioConnection is found in cores AudioStream.(h/cpp). (IIRC, it is simply a linked list that is worked at software interrupt level)

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