On Sat, Mar 13, 2010 at 3:29 PM, [email protected] <[email protected]> wrote: >> o moving / resizing the wefax display window punches holes in the >> display bitmap.
> This happens as well each time CPU is taken by another task on my PC. I > suspect that some samples are lost when the machine is too busy. For > example, when changing the horizontal center of the image, it has to be > reallocated and sometimes, a couple of pixels just appear black. > Does someone think that some sample could be set to zero when the machine is > very busy? The Mac won't lose audio samples as far as I know. I am a professional musician, and I have never noticed gaps in the audio from moving windows and that sort of thing. Also, Multimode, another program that does fax this way (using the Mac's audio device) never loses samples no matter what you do with the machine, so I think that it's happening at a higher level. Do you have a specific task whose job it is to get samples from the audio and store them into the receive buffer? Or are you putting the samples right into the display bitmap? Because there will be times the display bitmap is locked, such as the re-allocation you mention. >> o confirm start of image definitely resets line rate; shouldn't. >> > > Do you please mean the LPM ? Do you think it would be better to keep the > same unslant tuning ? Yes, definitely. As I have said earlier, this adjustment doesn't generally apply to the incoming signal, but instead, corrects the computer's error in timing. Further, no matter which (or if both), as long as you stay on the same broadcast, the slant (and hence the correction) will remain the same, so the unslant tuning should not be reset between images. Let the user do that (and save it when the program exits and restarts... mine is at .997 and every fax signal I have seen so far is straightened by that value. _______________________________________________ fldigi-alpha mailing list [email protected] https://lists.berlios.de/mailman/listinfo/fldigi-alpha
