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Honored Contributor I
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NEED HELP in audio signal processing

i am using DE1 Board equipped with Cyclone II, 

im juz a newbie in FPGA, pls help me in this project.. 

 

i wound like to know how to perform the fast furior transform
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Honored Contributor I
29 Views

First step : start with something alot simpler than an FFT.

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Honored Contributor I
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You should solve it in the following order. 

 

1. Be familiar with your board and audio CODEC. 

 

2. Write or get a module to drive the audio CODEC. Use it and understand it. 

 

2. Choose between a pure hardware solution or a Nios II based solution. 

 

3. If you have choosen a pure hardware solution there is a lot of stuff to study about fft implementation: Altera core, own core, open core. 

 

4. If you have choosen a Nios II based solution you must connect your audio CODEC module as an slave peripheral. Internet is full of C language based FFT implementations.
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Honored Contributor I
29 Views

 

--- Quote Start ---  

You should solve it in the following order. 

 

 

4. If you have choosen a Nios II based solution you must connect your audio CODEC module as an slave peripheral. Internet is full of C language based FFT implementations. 

--- Quote End ---  

 

 

thks for guilding, i would like to choose NIOS II base solution,  

if there is any tutorial or referance book available pls kindly tell me tq
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Honored Contributor I
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Why not use what's already on Terasic's website? 

 

http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&no=83 

 

There are two audio examples near the bottom of this page. 

 

Cheers, 

 

- Brendan
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Honored Contributor I
29 Views

 

--- Quote Start ---  

Why not use what's already on Terasic's website? 

 

http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&no=83 

 

There are two audio examples near the bottom of this page. 

 

Cheers, 

 

- Brendan 

--- Quote End ---  

 

 

i have the sample already, i juz wonder which component is required to add in whn i configurete in SOPC builder,  

i tried rs233 communication in NIOS already , i add a Jtag uart rs232, memory and processor,  

 

can anyone tell me which component is the audio codec which i suppose to add
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Honored Contributor I
29 Views

You could use example module included in example suggested by Brendan, another option is the Altera University Program cores: 

 

ftp://ftp.altera.com/up/pub/university_program_ip_cores/80/audio.pdf 

ftp://ftp.altera.com/up/pub/university_program_ip_cores/80/audio.zip
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