|
indeed Bruce. Consider I might be aiming at a portable device, or other low power, low count silicon platform. (5$) and bear in mind, I might want a heap processing power left over for modulator/demod, error correction, some audio processing , noise reduction etc. For those that know real DSPs, they'll recognize that the Cortex M4 (stm32 4...) is NOT a real DSP. It has some handy instructions, they call DSP, sure. But start throwing it alot of filtering tasks and you'll run out of cycles. It is a very good general purpose processor though, excellent in fact. I use it for all sorts of things when I don't care about power consumption. The CODEC2 is not a simple DSP task, it is much more a complex algorithm that doesnt get alot of help from a real DSP. The STM32M4 is not a low power processor. A real FP processor like the latest low power SHARCs ($10) for similar money might do the job for less power, depending on the efficiency of the coder- that's the thing to get the advantage of the real DSP, you got to know what you are doing. The M4 will make fairly good throughput out of junk coding. I use the Rowley Associates toolchain. glen english VK1XX "yes - I do this for a living" Altium- ModelSim, Matlab, Vivado, Rowley. On 21/08/2014 5:44 AM, Bruce Perens
wrote:
-- - Glen English RF Communications and Electronics Engineer CORTEX RF & Pacific Media Technologies Pty Ltd ABN 40 075 532 008 PO Box 5231 Lyneham ACT 2602, Australia. au mobile : +61 (0)418 975077 |
------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/
_______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
