CW - Morse Code qso over the internet using the free "audio OVER ip" APP - "Gstreamer" - LIVE DEMO
1.6 هزار بار بازدید -
7 سال پیش
-
brief demo of one CWop
brief demo of one CWop sending CW to another CWop over the internet using the Gstreamer audio streaming APP - an AUDIO OVER IP opensource project that has versions for all OSes...
GSTREAMER:
https://gstreamer.freedesktop.org/
here are the GSTREAMER terminal commands used in this video for the SENDER and RECEIVER:
SENDER:
gst-launch-1.0 jackaudiosrc provide-clock=true do-timestamp=true buffer-time=10000 ! audio/x-raw,channels=1 ! audiorate ! audioconvert ! opusenc bitrate=128000 frame-size=40 ! rtpopuspay max-ptime=10000000 ! udpsink host=192.168.1.101 port=5001
RECEIVER:
gst-launch-1.0 -v udpsrc port=5001 caps="application/x-rtp" ! queue ! rtpopusdepay ! opusdec ! audioconvert ! jackaudiosink buffer-time=30000
Gstreamer allows full duplex..so you can have FULL QSK to break in
Gstreamer has MANY options and a lot of versatility to explore for Morse Code QSO'n over ip
as you can hear, and see on the SPECTRUM ANALYZER and SCOPE views....the CW remains fully intact, cloning the original FLdigi cw note shape and timing, and has excellent audio quality, sounding virtually like the original FLdigi morse code audio tones - when using Gstreamer and the OPUS CODEC
NOTE: towards the end of the video you may have heard an audio "POP" that is typical example of the types of QRM & QRN you might hear when using UDP packets for audio transmission over the internet, similar to the audio artifacts you hear on HF, with static crashes et al... packet delay, packet loss etc...
GSTREAMER:
https://gstreamer.freedesktop.org/
here are the GSTREAMER terminal commands used in this video for the SENDER and RECEIVER:
SENDER:
gst-launch-1.0 jackaudiosrc provide-clock=true do-timestamp=true buffer-time=10000 ! audio/x-raw,channels=1 ! audiorate ! audioconvert ! opusenc bitrate=128000 frame-size=40 ! rtpopuspay max-ptime=10000000 ! udpsink host=192.168.1.101 port=5001
RECEIVER:
gst-launch-1.0 -v udpsrc port=5001 caps="application/x-rtp" ! queue ! rtpopusdepay ! opusdec ! audioconvert ! jackaudiosink buffer-time=30000
Gstreamer allows full duplex..so you can have FULL QSK to break in
Gstreamer has MANY options and a lot of versatility to explore for Morse Code QSO'n over ip
as you can hear, and see on the SPECTRUM ANALYZER and SCOPE views....the CW remains fully intact, cloning the original FLdigi cw note shape and timing, and has excellent audio quality, sounding virtually like the original FLdigi morse code audio tones - when using Gstreamer and the OPUS CODEC
NOTE: towards the end of the video you may have heard an audio "POP" that is typical example of the types of QRM & QRN you might hear when using UDP packets for audio transmission over the internet, similar to the audio artifacts you hear on HF, with static crashes et al... packet delay, packet loss etc...
7 سال پیش
در تاریخ 1396/12/05 منتشر شده
است.
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