Fix Monitor Source Audio Issue
Forgot to add 'now' variable to all sync types, would attempt to play source audio and decoded audio at same time on most types.
Add Source Audio Monitoring - But its a Work in Progress
Seriously, though, depending on which setting you have on, it sounds terrible.
Also, make ncurses no longer a requirement for the time being. Still want to work that into this version eventually.
NXDN48 Voice Decoding is Good Now
Just use squelch if using SDR++ or GQRX to feed it. RTL-SDR input mode and NXDN still makes tons of false positives, and doesn't work well at all. May just be a bad signal issue but still think the RTLSDR input uses wrong center freq/tuned freq/"optimizations", need to get back to that some time, maybe also implement squelch settings on rtl_fm mode.
Thanks to LouisErigHerve for his 'Improved NXDN Detection' update on his version, implemented it and works SO MUCH BETTER!
May still disable the if ((state->lastsynctype == 9) || (state->lastsynctype == 17)) condition in dsd_frame_sync.c if I think it leads to more consistent decoding vs false positives. USE SQUELCH!
