Thanks Steve, A breakdown of the memory usage for the cohpsk modem as per (1) in the previous posts on this subject will let us do some tuning. The FDMDV modem started out at several MBytes.
It would be a good idea to perform (2) CPU load measurements in and out of sync. - David On 19/01/16 12:14, Steve wrote: > I'm not sure if any of this is valuable, but on a 64-bit CPU (Pentium > G645T) the coherent+700 codec was about: 125k of RAM, which should fit > with room to spare for 192 k chips. 75k of Flash or so. (bss needs to > be in RAM). I was using 4-byte single-precision floats. > > text data bss dec > 20598 712 111008 132318 > 32611 1576 13608 47795 > > The transmit routine is not CPU intensive, but the receiver code can > get quite hungry when you are out of sync. > > Since I don't think you need the rate converter (48k<->7500) that will > save a lot of CPU and some RAM. > > I think the 700 codec is much different in size from the 1300 codec. > > Back of the envelope stuff... > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
