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Article #2415

Re: DSP for audio work

#2415
From: Igor Korzinek
Date: Tue, 26 Mar 2002 09:44
133 lines
5630 bytes
Hi,
I collegue from our company and me also wanted to do some experiments
with DSP in Audio. Actually to try to build some AC-3 stuff with active
X-over...
And we are waiting for the same AD (animal device:-).

My Q is: the representative told us that they have some non-production
silicon on
the board. So is it buggy DSP or you can use it without problems ?
Or you got a quote that allready contain the debugged, "production" 21161 ?

Igor

"Johnny" <john_wr100@yahoo.com> wrote in message
news:3c9f052b.29785569@news.optusnet.com.au...
> On Sun, 24 Mar 2002 17:31:58 -0500, "KG7HF" <KG7HF@amsat.org> wrote:
>
> Thanks for the advice PD and also thanks to Al.
>
> Yes I got a quote on the 21161 kit this today.  Its basically US$500..
>
>  Mutiple channels should give pretty awesome for my app.  and 600MFLOP
> should allow higher sampling rates whether I need them or not. Pity
> there dosen't appear to be any SP-DIF receivers or transmitters.  But
> I could probably design a little daugher board to do this .. one
> day...
>
> One thing that concerns me is that the evaluation kit is limited to
> 8kb program size.  ie 2048 Words.   Should I assume this is going to
> be more than enough for my FIR filter implementation?
>
> I wonder, is there separate memory space to store my filter
> co-efficients... Because I will probably have nearly 2000 filter
> coeficients which wouldn't leave a lot of space for program.
>
> Also I suppose the program must be stored in a low-speed flash memory
> anyway, and probably gets loaded by the boot loader or external
> micro..  Yes.. I got a lot more research to do.. Hopefully I will be
> able to get a soft-copy of the users manual from the AD rep.
> Obvioulsy I will study the data sheet.
>
> Thanks agian..
> John.
>
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> >I agree, the 21161N EZ-Kit would be a good choice since you budget is
$500.
> >The debugger with the 21161N Ez-Kit is USB based, and is much faster and
> >more robust than that available with the 21065L EZ-Kit.  I think you will
> >also find that if you do run into any technical difficulties, you will
get a
> >much better responses using the newer evaluation boards.
> >
> >PD.
> >
> >
> >"Al Clark" <dsp@danvillesignal.com> wrote in message
> >news:Xns91DB81B2F6D2aclarkdanvillesignal@209.249.90.101...
> >> john_wr100@yahoo.com (Johnny) wrote in news:3c9db1ea.6888487
> >> @news.optusnet.com.au:
> >>
> >> > On Sun, 24 Mar 2002 10:18:32 GMT, john_wr100@yahoo.com (Johnny)
wrote:
> >> >
> >> > I am planning on doing some experimentation with digital fitlers. I
> >> > want to make an active crossover for my audio system. I was looking
at
> >> > one of the following kits:
> >> >
> >> > Motorola DSP5636X Evaluation module.
> >> > or
> >> > Analog devices ADSP-21065L Ez-Kit lite
> >> >
> >> > I probably need about 80 Million multiply/accumate per second and at
> >> > least 24bit fixed point. Faster is better though.
> >> >
> >> > I dont mind programming in Assembly or C language.  I figure that
> >> > assembly is probably fine because my code should be pretty simple
just
> >> > to implement FIR filters and  I/O functions.  I was kind of scared by
> >> > roughly 1000 pages of documentation for the motorola development
> >> > system and DSP programmers guide.
> >> >
> >> > Does anyone have experience with these kits?
> >> > Which is easier to use, and will offer the best learning curve?
> >> > Should I look at Texas Instuments or other DSPs?
> >> > What kits are the best value for money?
> >> >
> >> > I was thinking of spending around US$500, but I might be able to
> >> > extend that.
> >> >
> >> > best regards,
> >> > Johnny
> >> >
> >> >
> >>
> >> Since you mentioned crossovers, I assume you need at least 4 channels
of
> >> DACs. I would get a 21161 EZ-Kit. This 21161 is much faster than the
> >> 21065L. It also has SIMD hich will work very well for your application.
> >>
> >> The EZ-Kit was 8 channels of 96kHz DACs.
> >>
> >>
> >>
> >>
> >>
> >>
> >> --
> >> Al Clark
> >> Danville Signal Processing, Inc.
> >> --------------------------------------------------------------------
> >> Purveyors of Fine DSP Hardware and other Cool Stuff
> >> Available at http://www.danvillesignal.com
> >
> >
>
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From: "Igor Korzinek" <igor.korzinek@inet.hr>
Newsgroups: sci.electronics.design,aus.electronics,comp.dsp
Subject: Re: DSP for audio work
Date: Tue, 26 Mar 2002 10:44:27 +0100
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