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Article #2415Re: DSP for audio work
From: Igor Korzinek
Date: Tue, 26 Mar 2002 09:44
Date: Tue, 26 Mar 2002 09:44
133 lines
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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. > > > > > > > > > > > > > > > > > > > >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$500, but I might be able to > >> > extend that. > >> > > >> > best regards, > >> > Johnny > >> > > >> > > >> > >> Since you mentioned crossovers, I assume you need at least 4 channels of > >> DACs. I would get a 21161 EZ-Kit. This 21161 is much faster than the > >> 21065L. It also has SIMD hich will work very well for your application. > >> > >> The EZ-Kit was 8 channels of 96kHz DACs. > >> > >> > >> > >> > >> > >> > >> -- > >> Al Clark > >> Danville Signal Processing, Inc. > >> -------------------------------------------------------------------- > >> Purveyors of Fine DSP Hardware and other Cool Stuff > >> Available at http://www.danvillesignal.com > > > > >
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,d43e8f202cc9402f X-Google-Attributes: gid112d1e,public X-Google-Thread: 103407,d43e8f202cc9402f X-Google-Attributes: gid103407,public X-Google-Thread: f8fcc,ad386b215662caf0 X-Google-Attributes: gidf8fcc,public X-Google-ArrivalTime: 2002-03-26 01:50:10 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!fu-berlin.de!Iskon!not-for-mail From: "Igor Korzinek" <igor.korzinek@inet.hr> Newsgroups: sci.electronics.design,aus.electronics,comp.dsp Subject: Re: DSP for audio work Date: Tue, 26 Mar 2002 10:44:27 +0100 Organization: Iskon Internet d.d. Lines: 135 Message-ID: <a7pftr$ugb$1@sunce.iskon.hr> References: <3c9da171.2670537@news.optusnet.com.au> <3c9db1ea.6888487@news.optusnet.com.au> <Xns91DB81B2F6D2aclarkdanvillesignal@209.249.90.101> <3c9e5515@news.mdc.net> <3c9f052b.29785569@news.optusnet.com.au> NNTP-Posting-Host: 213.191.156.26 X-Trace: sunce.iskon.hr 1017135867 31243 213.191.156.26 (26 Mar 2002 09:44:27 GMT) X-Complaints-To: abuse@iskon.hr NNTP-Posting-Date: 26 Mar 2002 09:44:27 GMT X-Newsreader: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700