Author Topic: FPGA and Audio Signal Processing  (Read 4702 times)

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Offline OpenglManTopic starter

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FPGA and Audio Signal Processing
« on: April 01, 2014, 11:32:57 pm »
According to the subjet, I would like to practice with FPGAs and audio signal processing.

Could you tell me any good book, tutorial or web about it ?, I have an Altera Cyclone II development board.
 

Offline hamster_nz

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Re: FPGA and Audio Signal Processing
« Reply #1 on: April 01, 2014, 11:51:41 pm »
What sort of DSP are you interested in? filtering, audio effects or signal processing?

If you are interested in Audio effects then have a look at secotion 3.3.6 of http://www.digilentinc.com/events/Common/Report%20Sample%20~%20DigitalSynth%20Report.pdf to get some ideas.

However, if you are a newbie at DSP,  if you only read one book on DSP make it "The Scientist and Engineers guide to Digital Signal Processing". A large part of it is available at no cost on the web at http://www.dspguide.com/pdfbook.htm
I never understood how the Discrete Fourier Transform actually worked until I read this book.

All the examples in the book are in BASIC (yes! BASIC) so how hard can that be to implement in an FPGA? :D

You can find a FIR filter implemented in VHDL at http://hamsterworks.co.nz/mediawiki/index.php/FIR_Filter if you want a canned base to work from.

But actually implementing the filter isn't the question - it is understanding how it works its magic is far more interesting than building one.

It is a bit like wiring an OpAmp, a few Caps and a few resistors  and building a filter. The interesting stuff is in how it works!
Gaze not into the abyss, lest you become recognized as an abyss domain expert, and they expect you keep gazing into the damn thing.
 
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