Here’s another good project based on a Xilinx FPGA: http://www.keyboardpartner.de/hammond/hoax_en.htm
Steffan > On 23.09.2015|KW39, at 20:50, Theo Verelst <theo...@theover.org> wrote: > > Matthias Meyer wrote: >> Hey Theo, >> >> it is nice to see interest in FPGAs here. I have worked with FPGAs for >> some years now and always wanted to use it for audio processing. Because >> the FFT is indeed really fast I thought about using it for real-time >> pitch detection. The Zynq platform is ideal because you can use Linux >> and the FPGA. I implemented some basic (multi)pitch detection algorithms >> on it using an accelerated FFT on the FPGA. >> ... > > I've done a number of things with programmable logic in connection with audio > and synthesis, let me mention here the synthesizers that Scott Gravenhorst > made for the Spartan 3E board which are cool. > > Compared with fast DSPs, the advantage of the FPGA fabric and available IP > blocks is that the instruction set of the DSP is limited, and the > instructions and data must all the time come one instruction at the time from > a few special registers or the main memory plus caches, there's not very much > parallel data for the heavy arithmetic unit computing elements. So in this > case, there's a smart, hundreds of mega hertz internal clock frequency set of > basic DPS blocks with short communication time and over a lot of fast FPGA > internal wires connected with special (small) FPGA internal memories, and a > control logic created by design software such that the whole operation is > very quick on the, what is it, Virtex-6 or so chip fabric. >
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