5 Commits

Author	SHA1	Message	Date
dennis.sheirer	c12123a81b	P25 - work in progress to improve CQPSK LSM audio output. Audio output is still choppy but greatly improved over the previous test release.	2015-04-25 23:21:20 +00:00
dennis.sheirer	52f2e3bdca	P25 audio work in progress - started work on exposing 88-bit (11-byte) IMBE voice frames from LDU messages. Added deinterleave, derandomize and the Golay(23,12,7) error detection and correction to LDU voice messages. Hamming edac still remains to be implemented. Plan to create a separate project to produce an imbe FormatConversionProvider that will convert 88-bit imbe frames to PCM audio that is then in a standard format for audio playback, recording, or conversion to another format like shoutcast.	2015-03-01 15:40:25 +00:00
dennis.sheirer	a65e821e85	P25 LSM decoder work in progress. Adds a CQPSK decoder based on Max's (KA1RBI) scope.py and gardner loop. ... The CQPSK decoder is starting to take shape, but needs more tweaking and testing. It's not keeping a good lock on strong P25 signals. I have to add some more features to the intrumentation package to allow me to visualize the internals of the CQPSK decoder so that I can get a better sense of what needs fine tuning. The CQPSK decoder may work for anyone that wants to sync the repo and run the build script.	2015-02-10 00:42:08 +00:00
dennis.sheirer	871705ece8	P25 - adds SNDCP context management and data packet parsing for IPV4 and UDP/IP packets to include IP addresses and data payload bytes.	2015-01-23 21:06:02 +00:00
dennis.sheirer	e5fad7ee22	P25 - Automatic Gain Control for P25 decoder	2015-01-19 19:25:43 +00:00