help for audio codec using VHDL

Dear Dr.Muthuswamy,

thanks a lot for posting and diskussing your description files.

It was realy helpfull to me to solve a problem, that i was trying to fix the whole week ;o)

Im working on my diploma project and this audio-stuff is only needet for testing the SD-RAM-Controller wich my thesis is about.

I hop its no Problem for You, if i use peaces of Yor I2C-controler for my tests and mention you as an source?

again thanks 0xFF FFFF Thanks for doing what you are doing ;o)

Thats not very descriptive of your problem. Are you basically saying to dont know how to use quartus?

Go to project -> add files to project to add multiple files.

hii

i hav just started using vhdl.For now i hav to store the sampled audio signal and then perform fft on it.for the first part,i went through the codes posted above.i dint get how do i compile all source files in one project or do i hav to try and convert into a single file.plz help.

thanks.

hi ....

good job .........very good

DE2 and DE1 are too much similar............i only change few pins

i work with video/ip and uclinux under nios2 but i was very interested in researching this subject .....thanks

cheers

Franz Wagner

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hi ....... thanks to reply

yeah ... the DE2 had this audio codec........

i read the documentation..... and its works!!!!

did you use this project to simulate neural network?????????

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Glad to hear it works, no we did not use it to simulate a neural network. That was one of the potential applications but we have no time since our school is on a quarter system.

Actually the problem is not simulating a neural network but rather how to make the network learn something useful. The neuron model that we use can also be used to simulate tens of thousands of cortical spiking neurons on a PC in real-time (with 1 ms resolution):

http://www.izhikevich.org/publications/spikes.pdf

Bart

hi ....... thanks to reply

yeah ... the DE2 had this audio codec........

i read the documentation..... and its works!!!!

did you use this project to simulate neural network?????????

thank you man......

Franz Wagner

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hi mbharat........

the DE1 use cyclone 2 FPGA??????

i had two board .... DE2 and cyclone 3 dev board and i wanna port your code to my boars........

the DE2 is better to do it i guess.......

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You can port the hardware to an FPGA board that contains the Wolfson WM8731 audio codec.

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another question..... about the pin clock_27[1..0] .... you conect this pin to a external clock???

and gpio_0[35..0] where i need conect this?????

i2c pins are used for what???? to configure ?????

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If you download DE1AudioAdcDac.zip from the link in this thread and unzip it, you should find a project report under the Report folder. Read and understand that report, it answers all your questions.

Bart

hi mbharat........

the DE1 use cyclone 2 FPGA??????

i had two board .... DE2 and cyclone 3 dev board and i wanna port your code to my boars........

the DE2 is better to do it i guess.......

another question..... about the pin clock_27[1..0] .... you conect this pin to a external clock???

and gpio_0[35..0] where i need conect this?????

i2c pins are used for what???? to configure ?????

thank u to post

cheers

Franz Wagner

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Hey.. I am new to VHDL..I have been trying to implement the code provided.if you have the file for pin assignments please attach it here.

regards,

Amit

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The pin assignments have already been imported. If you want the DE1 pin assignments, you can get them from the DE1 CD-ROM on Terasic's website:

http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=53&no=83&partno=4

Hey.. I am new to VHDL..I have been trying to implement the code provided.if you have the file for pin assignments please attach it here.

regards,

Amit