Started Feb 14, 2015
Started this discussion. Last reply by Chuck aa0hw Jul 2, 2019.
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brief test of 24 bit VS 32 bit uncompressed audio going from a laptop to a Raspberry pi 2b loopback - and then right back to the laptop over Ethernet cables going through router and switches
32 bit has virtual no variance from the original audio source
24 bit does show a wide berth of harmonics generated at the lowest db…
Posted on January 26, 2020 at 7:39am
NOTICE the DEAD ZONE in the following SCOPE view of sending a couple of 55 ms DITs... while trying to listen for how much QSK RECEIVE AUDIO is between those dits....NOTE: you will see a GAP of "NO AUDIO" from phase cancellation due to the technique that the K3 firmware uses to try and get "more" QSK audio for the QRQ OP's
Posted on January 25, 2020 at 3:56pm
this video demoS using GSTREAMER's audiointerleave and deinterleave plugins for a Gstreamer OPUS CODEC AUDIO OVER IP remote rig audio operations use...
break the 2 channel audio over ip pipelines into 2 individual pathways that can contain their own individual Gstreamer audio DSP plugins...
in this case....2 different…
Posted on January 23, 2020 at 11:15am — 1 Comment
Posted on January 20, 2020 at 3:00pm
brief demo of operating QRQ CW remote rig operations using an ELECRAFT K3S, a Raspberry PI 2b, a remote LINUX LUBUNTU 18.04 LAPTOP, and using Gstreamer PIPELINES for several functions:
1. audio over ip to and from the PI::RIG interface - full duplex
2. cw audio bandpass filter for transmit
3. PTT activation tone bandpass filter for…
Posted on January 19, 2020 at 9:45am