David Rowe wrote: > The tests I would be inclined to do are: > > 1/ Test new (and old, i.e. combined audio streams) functionality on > Linux and Win32. > > 2/ Look for good quality scatter diagram (nice tight spots) on full > duplex analog loopback (connect the mic (from radio) to speaker (to > radio) using patch lead). > > 3/ Separate streams may have some impact on the demod timing estimation. > Take a look at the timing estimation plot, look for loss of sync, and > measure BER in analog loopback for a few minutes (should be 0). There > is a test mode that enables test data frames to check BER.
#1 is easy enough, but I think for #2 and #3, I need to get another sound device (I'll pick up a couple cheap USB devices) to test properly. My sound card has three sets of connections, so my use so far has presumably been using the same clock for all IO. I'll likely wait and pick them up at Hamvention since it's about the same wait time as shipping from Hong Kong, and I'm the only person so far who wants this feature. If it all works out, I just thought of a new mode that may be worth playing with... using left/right channels to enable full duplex use with a single sound card. Not sure if sound cards generally have enough isolation between the channels though, so it may not work very well in real life. This would likely end up waiting until I build a new rig interface though. ------------------------------------------------------------------------------ Is your legacy SCM system holding you back? Join Perforce May 7 to find out: • 3 signs your SCM is hindering your productivity • Requirements for releasing software faster • Expert tips and advice for migrating your SCM now http://p.sf.net/sfu/perforce _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
