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Altera_Forum's avatar
Altera_Forum
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16 years ago

DE2 Audio Codec Programming

Hi,

I am engg student.I are working on SOPC baesd speech to text conversion.I am confused with how to to program audio codec for Audio to Digital conversion for input from microphone and give it to FPGA.

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  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Would be nice if guys can attach the file for the linein, i have been trying to do it, and just can't.. I have read the datasheet... Thank You.

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    --- Quote Start ---

    I have tested this on both the DE1 and DE2 boards.

    --- Quote End ---

    Hi, I am wondering how you tested it. Did you send random values on your data lines? I'm trying yo used this code on a different development board but the principles are the same.

    Regards,

    Hunter
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Good Day Everyone

    The g00_audio_interface.vhd code does not process the input of audio, as stated in the pretext information.

    Does anyone know how the input can be done? (in VHDL code)

    Kind

    Regards
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    --- Quote Start ---

    Good Day Everyone

    The g00_audio_interface.vhd code does not process the input of audio, as stated in the pretext information.

    Does anyone know how the input can be done? (in VHDL code)

    --- Quote End ---

    I also need to know how. should you find help elsewhere, please let me know n I sure will do the same...

    Kind

    Regards
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Good day

    I still have not found it out.

    My development board (altera cyclone II) passes the input(linein) straight to the output (lineout) irrespective of the bypass setting. Does anybody know how to prevent the input displaying on the output.
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Hello.I'm new here.Soo I have to work on a project that needs to analize music frequency and display it on the leds on the DE2.My question is : How do I use the DE2 to turn music into analazible data?

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    hi i am having same trouble i need to use the line in or mic in as well can anybody help in that whatever i do the sound gets output automatically how to control it???

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Thanks.. I think this will be very helpfull since i need to use Audio Codec in De2 board.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    --- Quote Start ---

    Hello, I am attaching a VHDL file which describes an interface to the Wolfson WM8731 Audio Codec chip located on the Altera DE1 and DE2 boards. This version just does output, but you can augment it to do input. For this you will have to read over the WM8731 datasheet.

    I have tested this on both the DE1 and DE2 boards.

    I hope you find it useful, but there is no warranty implied!

    Jim

    --- Quote End ---

    Maybe you could explain to newbie why the code is designed for a 24MHz clock. Doesn't both DE1 and DE2 have 50MHz and 27MHz clocks?