1) Speech analysis ending up with a digital "representation" of the voice and, later regenerating the "voice".
2) Modulation and Demodulation of digital-audio to/from the radio.
In the MMDVM and MMDVMHost project, we have two "computers", the DUE and the Raspberry Pi.
I'm very happy with using two "computers" as in the DUE and a Pi clone.
(For me, the Banana Pi with a SATA disk wins hands down. Now 120G SSD.)
So I looked up what a "Arduino DUE" is
DUE is a cortex M3 based unit. no floating point unit, butreasonably capable of floating point library but not int he volumerequired but I'd have to say, unlikely to work without a TON ofwork.
CortexM3 is OK for (work already done) fixed point reference designcodecs, but not this one.
you'd be highly recommended to get codec2 running on the STMF4discovery $15 or STMF7 $80 discovery board.
(unless you want a project for the summer- fixed point port ofcodec2.....)
there seems to be a bit of arduino STM32 F4 activity in thestm32duino forum
http://www.stm32duino.com/viewforum.php?f=39
good luck
cheers
Glen English VK1XX
The DUE likely doesn't have the horsepower. I'veseen the MMDVM mentioned in passing but going to the website thecode doesn't seem to be availible or licensing. Â
Thanks forthe info.
 I'm about to use the Arduino DUE (M4) for mmdvm.
 The CMSIS library is used for MMDVM.
 Could we add the Codec2 code?
 (well we have P25, D-Star, Fusion, DMR, why not addanother)
Alan VK2ZIW
mmm maybe I'll show it......yes maybe. got to get otherwork out of
the way Hopefully I will have my pick and place machineonline by then.....
F7 is also much more complex in the memory departmentif you want to
get the best out of it. many different paths betweenthe memories
and the processor. many different memories on board...
You can run it in 'basic mode' and still get reasonableimprovement
for "general purpose code' in performance over F4. Dualissue micro
and deep pipeline seems to reap benefits, and powerconsumption very
reasonable.
But... !
I would only recommend the upgrade if have your witsabout you....
It's also a fair extra $.
If you are not already using the CMSIS optimised DSPlibraries, then
you might get 2:1 on your existing DSP code, alsowithout going to
M7 just by using the optimized libs.
cheers
Thanks for the heads up Glen - gd to see we havean upgrade path. Will
you be shoing yr new board off at Gippstech? Ihope to have the SM2000
doing something" by then.
- David
Anyone using the STM32F7 (like I am on my newcodec2 board) be sure to
read the chip errata and migration sheet.
there are some bugs with the silicon thataffect triggering of the ADCs
from the timers (essential) .
There are reasonable workarounds. You'll saveyourself a day by reading
the errata first...
The silicon errata/bugs are non trivial,also....
In addition, the ADC trigger TRGO defines aredifferent.. ensure you
read the migration sheet.
The M4Â startup code may not work for M7despite it being "binary
compatible", there are NOPs inserted betweencpu controls and you need
more NOPs between setting a function and usingit. (deeper longer
pipelines).
apart from that, the M7 beats the pants offthe M4 for identical code !
glen VK1XX
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Mobile security can be enabling, not merelyrestricting. Employees who
bring their own devices (BYOD) to work are irkedby the imposition of MDM
restrictions. Mobile Device Manager Plus allowsyou to control only the
apps on BYO-devices by containerizing them,leaving personal data untouched!
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_______________________________________________
Freetel-codec2 mailing list
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------------------------------------------------------------------------------
Mobile security can be enabling, not merelyrestricting. Employees
who bring their own devices (BYOD) to work are irked bythe
imposition of MDM restrictions. Mobile Device ManagerPlus allows
you to control only the apps on BYO-devices bycontainerizing them,
 leaving personal data untouched!
https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
_______________________________________________
Freetel-codec2 mailing list
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Alan
Evil flourishes when good men do nothing.
Consider Jesus.
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70 Wedmore Rd.      Sun Solaris, AIX, HP/UX, Linux,SCO, MIPS
Emu Heights N.S.W. 2750Â Routers, terminal servers,printers, terminals etc..
+61 2 47353013Â (h)Â Â Â Â SupportProgramming, shell scripting, "C", assembler
0414 353013 (mobile)Â Â Â After uni, electronics tech
------------------------------------------------------------------------------
Mobile security can be enabling, not merely restricting.Employees who
bring their own devices (BYOD) to work are irked by theimposition of MDM
restrictions. Mobile Device Manager Plus allows you tocontrol only the
apps on BYO-devices by containerizing them, leaving personaldata untouched!
https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
_______________________________________________
Freetel-codec2 mailing list
https://lists.sourceforge.net/lists/listinfo/freetel-codec2
------------------------------------------------------------------------------
Mobile security can be enabling, not merely restricting. Employees
restrictions. Mobile Device Manager Plus allows you to control only
Evil flourishes when good men do nothing.
Consider Jesus.
70 Wedmore Rd. Â Â Â Â Â Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Â Routers, terminal servers, printers, terminals etc..