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DIY Stompboxes => Digital & DSP => Topic started by: Dragonfly on May 07, 2006, 06:56:23 PM

Title: delay based effects...TMS320C6727 DSP info ... !
Post by: Dragonfly on May 07, 2006, 06:56:23 PM
looking to build a delay, chorus, reverb, etc ?  this might be a nice "kick start" for ya !

http://focus.ti.com/lit/an/spraaa5/spraaa5.pdf (http://focus.ti.com/lit/an/spraaa5/spraaa5.pdf)
Title: Re: delay based effects...TMS320C6727 DSP info ... !
Post by: Dirk_Hendrik on May 09, 2006, 01:20:29 PM
Great one, Thanks!
Title: Re: delay based effects...TMS320C6727 DSP info ... !
Post by: Peter Snowberg on May 09, 2006, 01:57:09 PM
The C6727 is a frighteningly powerful chip. At 300 MHz, you get 2400 MIPS/1800 MFLOPS.

<Dr. Emmit Brown voice>
1.8 GigaFLOPS!?!?!? 1.8 GigaFLOPS!!?!!?!
</Dr. Emmit Brown voice>

Just for a little skewed perspective, the Original Cray I supercomputers were rated at 166 MFLOPS.

The Eval board is $2K from Lyrtech but it comes with 8 channels of 192K 24bit A/D/A! :icon_twisted:
Title: Re: delay based effects...TMS320C6727 DSP info ... !
Post by: Transmogrifox on May 19, 2006, 02:36:49 AM
That's pretty incredible.  A person could do some seriously rad DSP with a 1.8 GFLOP chip at a very fast sample rate.  You could even do it in C and not worry about "wasted" instructions.  24 bits I once figured is about at the thermal noise floor assuming a 5V reference.  You would probably be quite accurately sampling analog noise.  I would have a really hard time believing somebody that thought 24 bit at 192k sounded "digital".

Get a whole bunch of RAM and you would have an incredible FX processor platform.  It's all just a simple matter of programming.

P.S.
FLOPS, for you who are not familiar with DSP, means FLoating point Operations Per Second
Title: Re: delay based effects...TMS320C6727 DSP info ... !
Post by: StephenGiles on May 29, 2006, 07:40:54 AM
 :icon_rolleyes: :icon_rolleyes: :icon_rolleyes: :icon_rolleyes: :icon_rolleyes: :icon_rolleyes: :icon_rolleyes:
Title: Re: delay based effects...TMS320C6727 DSP info ... !
Post by: Dragonfly on July 15, 2007, 11:10:45 AM
Here's a much more "in depth" PDF than the one posted at the start of the thread. :)

http://focus.ti.com/lit/ds/symlink/tms320c6727.pdf (http://focus.ti.com/lit/ds/symlink/tms320c6727.pdf)