[sdiy] FPGA digital audio

[Paul Maddox]

Hi,

> If anyone does get serious about doing an FPGA design. My buddy Nick Hartl
> is the Xilinx field applications engineer (FAE) for the Chicago area. I
> mentioned the idea to him and he has indicated he would help out when he
> can. He's more into detectors for Fermi Lab, but he thinks the idea is
> "quite doable". Gate delays are a uniform 1 nanosecond.
>
> FPGAs are really large RAMs which do logic by look up tables. They are now
> starting to get to the point where you an mix RAM and logic pretty easy
(say
> for a quadrature sine wave generator, a frequency shifter is something
that
> could be done in an FPGA). The strength is the software support and
multiple
> input formats (schematic, VHDL, others). There are some advantages over a
> DSP approach unless you like to write software.

a friend of mine , who's on the list (HIYA)
did me an oscillator chip on an FPGA...
with some incredible specs/power/modulation on board,
oh, and its 32 oscillators, not just one :-)

> Some FPGA tips from him:

all valid
But Id add, learn to think about how it works..
dont forget an FPGA is NOT a sequential device, its all happening at the
same time..


Paul
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