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 Forum index » DIY Hardware and Software » Microcontrollers and Programmable Logic
Which DSP for sound synthesis?
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matej



Joined: Feb 22, 2007
Posts: 16
Location: Munich
G2 patch files: 4

PostPosted: Thu Aug 04, 2011 10:48 am    Post subject: Which DSP for sound synthesis? Reply with quote  Mark this post and the followings unread

Hello everyone!

I'm planning to make a simple synthesizer for my thesis and need advice with choosing a platform. I will use development board with d/a converters.

Here are my priorities:
-quick start, so I can begin coding without too many problems
-some internet resources and sample programs
-reasonable price
-added bonus would be if it could actually be useful to me as a synthesizer - in this case I could spend a little more
-possible future use of experiences - I would rather choose something I might use again


So far I have looked at:
-ADSP-BF592 EZ-KIT
http://www.analog.com/en/processors-dsp/blackfin/BF592-EZLITE/processors/product.html
-Freescale symphony soundbite - the first one I found out about, but it look that Freescale no longer supports Symphony Studio
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=SYMP_SOUNDBITE
-TI TMS320VC33 University DSK - unfortunately I can't find any documentation about this one, so it's probably not an option
http://focus.ti.com/docs/toolsw/folders/print/tmdsdsk33.html
-TI TMDX5515eZDSP
http://focus.ti.com/docs/toolsw/folders/print/tmdx5515ezdsp.html
-dsPIC starter kit - the cheapest one
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en534506



I also haven't decided on synthesis method yet. If I choose something like dsPIC, I guess FM would be the most appropriate, because it doesn't demand much processor power. I'm more interested in physical modeling or modeling analog synthesizers, but I don't want to spend to much time with this project.

I have some experience with programming microcontrollers in assembly, with PC programming in C and also have some theoretical knowledge of digital signal processing. I also know sound synthesis from user perspective (nord modular).

Thanks for your answers!
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State Machine
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Janitor


Joined: Apr 17, 2006
Posts: 2743
Location: New York
Audio files: 24

PostPosted: Tue Aug 09, 2011 11:33 am    Post subject: Reply with quote  Mark this post and the followings unread

You might be interested to know that Elektor magazine has started a new series of articles entitled "Audio DSP Course" and have completed two installments thus far in the May and June Issues. These papers feature the DSP chips from Freescale. In particular, the DSP56374.

Link to Elektor

http://www.elektor.com/elektor-uk.35.lynkx

Also, don't forget about some of the great FPGA and MCU boards from Digilent

http://www.digilentinc.com/
Have fun and please keep us up to date on your choices.

Bill
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BobTheDog



Joined: Feb 28, 2005
Posts: 3841
Location: England
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PostPosted: Wed Aug 10, 2011 2:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

I can recomend the ezDsp stuff, they are cheap as chips and the dev environment works well and is not crippled in any way.

The samples included are enough to get you going and the TI documentation is very good.

Ideal for a beginning board.
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matej



Joined: Feb 22, 2007
Posts: 16
Location: Munich
G2 patch files: 4

PostPosted: Mon Aug 15, 2011 2:54 am    Post subject: Reply with quote  Mark this post and the followings unread

Thank you both for your answers.

The elector articles looks interesting, especially if they will sell ready-built board. I am only concerned about freescale software support. Symphony studio apperently isn't well documented and Suite 56 is very old.

Quote:

PostPosted: Wed Aug 10, 2011 9:53 pm Post subject:
I can recomend the ezDsp stuff, they are cheap as chips and the dev environment works well and is not crippled in any way.

The samples included are enough to get you going and the TI documentation is very good.


That sounds good, I will take a better look at it.

I'm currently writing sound synthesis algorithms in visual c++, but I'm just at the begining. I spend too much time playing music. Smile
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JovianPyx



Joined: Nov 20, 2007
Posts: 1219
Location: West Red Spot, Jupiter
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PostPosted: Sat Dec 01, 2012 12:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

I know this thread is very old, but I thought I'd toss a reply in since I have some dsPIC experience. The dsPIC circuit requirements are quite simple and non-critical. I was able to get 4 crystal clock dsPIC systems running using stripboard. They all run at the maximum performance of 40 MIPs. So anyone else who might need to use a dsPIC - don't be afraid to DIY it, it works. Yes, you need to observe basic RF circuit rules - the main one being - keep your high frequency wires short. I was able to mount the 20 MHz crystal within 1/4 inch of the IC (28 pin DIP). Programming can be accomplished with the low cost PICkit-2 which will program a wide variety of Microchip devices.
_________________
FPGA, dsPIC and Fatman Synth Stuff

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