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Altera_Forum's avatar
Altera_Forum
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15 years ago

fft on nios

hello everyone.

im working on speech recognition project using nios2 on de2 board.

now i need to do fft to the signals i get from the audio codec.

can anyone help with this ? how to conect the fft core to the nios ?

and if anyone have examle i will be very greatful if he can send it to me.

thanks

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    I would just run the software portion of the design to learn more about the FFT algorithm. The hardware version in this design requires the use of the Nios II C2H compiler and it uses MM accesses for both the input/output as well as the twiddle factor look ups. The hardware version is optimized for the C2H accelerator so I wouldn't recommend trying to learn from it.