Hi Glen, nice, would be interesting to see how much the STM32F4 gains by use of CMSIS FFT routines.
BTW, I am not sure, but I think you mentioned the removal of malloc as one of your changes. For us with the mcHF it would not be good to have the memory for FreeDV code statically allocated since FreeDV is just one operation mode of the mcHF, and we need the memory at other times for other stuff, especially since it really eats a lot of memory (in relation to the STM32F4 RAM sizes). Even half of it is still a lot. Looking forward to gain some more free cycles with your work. Regards, Danilo Am 16.09.2016 um 03:53 schrieb glen english: > Hi Danilo > > yeah, you have plenty in hand. > > OK so M7 and CMSIS FFT, about 2 x speed (same clock) 7.74mS (1200bps) > for decode. > > On 16/09/2016 11:49 AM, Danilo Beuche wrote: >> H >> >> regarding the times @mcHF (STM32F4, 168Mhz) some clarifications: We >> measured 17.3ms per 40ms interval for the voice decode part only (this >> is only happening once the modem is synced) and roughly 5ms of >> fdmdv_demod per 20ms interval (happens all the time). Which gives us in >> total some 27ms per 40ms once synced. This is about 68% load. >> >> Regards, >> >> Danilo >> >> >> >> >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Freetel-codec2 mailing list >> Freetel-codec2@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > > > ------------------------------------------------------------------------------ > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 ------------------------------------------------------------------------------ _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
