Re: DSP System


"Jon Slaughter" <Jon_Slaughter@xxxxxxxxxxx> wrote in message
news:FmWni.9627$eY.8942@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
How hard is it to actually implement a DSP system?

It depends.

All I want to do is take an analog signal, add some digital
filtering(well,
whatever I want once I get into the software side), and output the signal.

If all you need is filtering the audio signal and some effects, the simplest
solution would be a digital audio processor. Consider TAS3004 from TI. It
does have the stereo codec built in. There are also many newer DAPs made by
AD, TI, Cirrus Logic, NXP, AKM and others.

I think all I'll need is the converters, memory, and the dsp? (I don't
think
I'll need a controller?)

You will probably need a flash memory.

Is it going to be much harder than just hooking all
these up together and then downloading some code to the dsp?

Well. The hardest part is to get "some code" to work.

At this point I do not need anything fancy and just want to apply some
effects like reverb and chorus to a signal for a start. The biggest
problems
at this point is the IC packaging for these devices as most are out of my
reach(BGA, for example) for prototyping.

Consider buying a DSP evaluation board.

Is such a conceptually simple project out of my ability as a hobbyist?

It is not a rocket science however it requires time and effort, as
everything.

need to come up with some prototyping schematic and get some pcb's made
for
prototyping? I'm really not sure how to go about this and I can't find
any
documents online that can give me some details about the process ;/

You can use schematic of a DSP evaluation board as a reference.

Vladimir Vassilevsky
DSP and Mixed Signal Consultant
www.abvolt.com


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