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Altera_Forum's avatar
Altera_Forum
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12 years ago

audio problem

how can i connect audio codec wm8731 to the filter fourier transform !!!

how can i send the audio from the microphone to the filter fft fourier transform then to the headphone!!!

the first part il works very well i can speak with the microphone and then i listen my self from the headphone but i need to send the voice from the microphone to the filter then to the headphone and i listen to the voice that will be changes

i need a help please

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    As I can see from your code, in the "audio.vhd" file, you are storing the data in "AUD_DACDAT" to send it out to the D/A Converter for headphones. Before doing that, you can invoke your filter. It should be fairly simple. I have modified the "audio.vhd". You can see the changes I have made under the tags "CHANGED". I did not compile it but it should be able to do what you ask.

    Regards,

    Berk
  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    think you for your help i try it but unfortunately i still listen to the initial voice there is no effect of the filter fft .

    this is my program with modifications . You can see it and can you propose any thing
  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    --- Quote Start ---

    As I can see from your code, in the "audio.vhd" file, you are storing the data in "AUD_DACDAT" to send it out to the D/A Converter for headphones. Before doing that, you can invoke your filter. It should be fairly simple. I have modified the "audio.vhd". You can see the changes I have made under the tags "CHANGED". I did not compile it but it should be able to do what you ask.

    Regards,

    Berk

    --- Quote End ---

    please can you help me and verify with me this code

    i use DE1 board i want to realize an audio project which i want to recorder my voice with the microphone in the sd card and then i want to listen to the voice which is recorder in the sd card

    please any help i want a code in vhdl

    i have a proposition that allows to speack in the mic and in the same time i listen to my self with the headphone . this part works very well i configure the audio codec via i2c and it works very well but i want to recorder the voice in the sd card if i press to key1 and then if i press key2 i listen to the voice from the sd card please i want some help

    this is my code

    ANY HELP
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    Hello ,

    i use DE1 board of FPGA (CYCLONE 2) i want to realize an audio project which i want to recorder my voice with the microphone in the sd card and then i want to listen to the voice which is recorder in the sd card

    please any help

    i have a proposition that allows to speack in the mic and in the same time i listen to my self with the headphone . this part works very well but i want to recorder the voice in the sd card if i press to key1 and then if i press key2 i listen to the voice from the sd card

    ANY HELP

    this is the code vhdl of sdcard

    http://devbisme.webfactional.com/content/accessing-xula2-microsd-card

    https://github.com/xesscorp/xula/blob/master/fpga/xula_lib/sdcard.vhd

    i want to do the link between audio code and sdcard code

    any help this is my code vhdl i want some who help me to verify with me this code