CW AUDIO over IP test using OPUS codec @ 4k bitrate, 60 ms frame-size; 200 hz CW pitch
brief test to see how well 4k bitrate OPUS CODEC can be regenerated on the RECEIVE SIDE using TRIGGER MIDI MONO and the AD5DZ CW keyer
https://lsp-plug.in/?page=manuals&sec...
https://github.com/recri/keyer
STEREO AUDIO output - Left Channel = original 200 hz receive CW
Right Channel = regenerated 728 hz CW
seemed like the best CW audio pitch when using the low bandwidth of 4k OPUS BITRATE encoding, was 200 hz...and the best OPUS FRAME size for the 200 hz receive pitch was 60 ms
Here is another test over internet from midwest to west coast and then back to the midwest , same settings but using a VPN this time for 1000's of miles of internet travel to test how the setup does
• 2ND test over VPN from MIDWEST to WES...
GSTREAMER TRANSMITTER SCRIPT
gst-launch-1.0 -v jackaudiosrc ! "audio/x-raw,channels=1" ! audioconvert ! audioresample ! audiorate ! opusenc bitrate=4000 frame-size=60 ! rtpopuspay ! queue ! udpsink host=192.168.1.101 port=7001 sync=false async=false
GSTREAMER RECEIVER SCRIPT
gst-launch-1.0 -v udpsrc port=7001 ! "application/x-rtp, media=(string)audio, clock-rate=(int)48000, encoding-name=(string)OPUS, sprop-maxcapturerate=(string)48000, sprop-stereo=(string)0, payload=(int)96, encoding-params=(string)2" ! rtpjitterbuffer ! rtpopusdepay ! opusdec ! audioconvert ! jackaudiosink sync=false async=false
Watch video CW AUDIO over IP test using OPUS codec @ 4k bitrate, 60 ms frame-size; 200 hz CW pitch online without registration, duration hours minute second in high quality. This video was added by user QRQcw 12 August 2020, don't forget to share it with your friends and acquaintances, it has been viewed on our site 160 once and liked it 3 people.