brief demo showing an experimental setup using REMOTE RIG AUDIO over IP via Gstreamer SERVER::CLIENT scripts...and Gstreamer CW bandpass filter scripts...with a RASPBERRY PI 2b as the hardware/software/soundcard interface between the REMOTE OP and the RIG(K3S)
QRQ CW KEYBOARD = AD5DZ's RECRI KEYER CW KEYER apps…
Brief example of showing the inclusion of an LV2 AUDIO FILTER chain into a Gstreamer PIPELINE
1. to discover what LV2 plugins Gstreamer "picks up" on your system.. run this command gst-inspect-1.0 | more
2. when you find the LV2 you want to incorporate into your Gstreamer pipeline run the inspect command again using the Gstreamer LV2…
Added by Chuck aa0hw on December 20, 2019 at 11:36am — No Comments
Gstreamer encodes and decodes the CW AUDIO using the GSM AUDIO CODEC - plus - one bonus of using Gstreamer for Receiving the TRANSMIT PIPELINE, is that Gstreamer has its own CW AUDIO BANDPASS filter PLUGIN code that you can setup and use...to filter out most of the harsh harmonics, and poor sounding audio of such a low bitrate, low sample rate,…Continue
Added by Chuck aa0hw on December 14, 2019 at 8:31pm — No Comments
this setup uses a RASPBERRY PI and its audio output going to the WINDOWS 10 audio input and SSH to bring the PI's AD5DZ CW KEYER's GUI onto the WINDOWS 10 desktop...so you can can have access to the typing screen and all the settings...
see this video for more info on the basic hardware and software setup…Continue
Added by Chuck aa0hw on November 27, 2019 at 7:30pm — No Comments
brief demo of using Windscribe's VPN service(free version) to be able to get through a public WIFI router that is blocking all ports...
ALSO at the same time, using Gstreamer TCP audio over ip, OPUS AUDIO CODEC pipelines to create a 2-WAY full duplex audio stream between the WiFi OP and another OP that is online trying to QSO with the OP using…
Added by Chuck aa0hw on November 25, 2019 at 5:02pm — No Comments
this is a follow up video to the previous setup demo using an EMF coil and a CW KEYER's SPEAKER with a Gstreamer Bandpass Filter to clean up the KEYER's square wave harmonics and key clicks ...
this video is similar, only using the MFJ 451 CW Keyboard and placing…Continue
This demo shows the AD5DZ CW KEYBOARD sending CW at 60 wpm from a remote OP's location to a RASPBERRY PI 2b which is using the RIG's own sound card as its own sound card in order to send CW on that rig remotely, over ip, using AFCW MODE on LSB. In order to preserve the first bits of the CW ELEMENTS, when using VOICE VOX MODE on the RIG, on LOWER…Continue
brief QRQ CW example//demo of using dual send & receive scripts for operating REMOTE RIG OPERATIONS::REMOTE RIG AUDIO over IP using Gstreamer RTPrtxQUEUE scripts using the OPUS CODEC…
Added by Chuck aa0hw on October 3, 2019 at 10:30am — No Comments
Using a Raspberry PI2b and the AD5DZ CW Keying software suite -
The Pi is using the K3S internal USB SOUND CARD as its own sound card too...providing a direct LINE INPUT and LINE OUTPUT from the pi to the RIG and from the RIG to the PI
The PI sends audio to the…
Added by Chuck aa0hw on September 30, 2019 at 1:44pm — No Comments
every Raised Cosine Window that can be used to form the CW ELEMENT Rise/Fall time edges...sounds just a little bit different at QRQ CW speeds...this test was run at 55 wpm using the Riemann Window, and 3.3 milliseconds was also trimmed off of each element to make it just a tiny bit lighter, thinner sounding, between letters...
brief demo of selecting various raised cosine windows for copying qrq cw using the AD5DZ CPO, being keyed by the AD5DZ CW Keyboard....NOTE: ...might not hear much difference unless using a good set of headphones...the changes are subtle between all the raised cosine windows options....…Continue
Added by Chuck aa0hw on September 18, 2019 at 2:24pm — No Comments
Experimental test to see how well a Gstreamer AUDIO OVER IP pipeline can (also)filter CW AUDIO headed for the LINE INPUT of a RIG for CW TRANSMIT using AFCW MODE on HF SSB(remote rig over Ethernet LAN setup using a Raspberry PI2b::RIG interface)
Here is the Gstreamer script that includes the additional script for the CW AUDIO BANDPASS…Continue
Added by Chuck aa0hw on September 7, 2019 at 4:00pm — No Comments
brief demo of getting the Windows program YPLOG to work on a MAC MINI Mojave OSX using WineBottler
NOTE: a Gstreamer "audio over ip" pipeline was constructed, using the OPUS AUDIO CODEC, to send audio from the MAC/YPLog over the home WIRELESS NETWORK, to…Continue
Added by Chuck aa0hw on August 29, 2019 at 4:08pm — No Comments
Brief demo of using the FILTA LV2 plugin to virtually eliminate all harmonic distortion from QRQ CW edge noise, before transmitting in AFCW MODE
Added by Chuck aa0hw on August 17, 2019 at 8:17am — No Comments
this is a follow up test to the previous video demoN the Gstreamer PIPELINE code for a CW AUDIO BANDPASS filter.
In this video...not only is the previous pipeline used with its CWa audio bandpass code so you can hear your own YPLog CW KEYBOARD sidetone in near zero…Continue
Added by Chuck aa0hw on August 15, 2019 at 3:00pm — No Comments
Brief demo showing the original audio output waveshape and sound spectrum output from YPLog's own audio engine...and then taking that original YPLog audio output from this CW Keyboard and Regenerating it to help improve the YPLog CW NOTE waveshape, edges, and audio spectrum.
NOTE: on video, the first text copied /pasted in yplog was supposed to…
Added by Chuck aa0hw on August 8, 2019 at 10:41am — No Comments
test to see how accurate the MIDI INPUT keying would be on the TEENSY BOARD, TEENSY pins 4 & 5, being keyed by an external CW KEYER's RIG KEYING OUTPUT jack(K1EL K40 - in this example) using the AD5DZ software CW KEYER Teensy MidiKeyer code
Extreme QRQ CW speed test at 150 wpm from the K1EL K40 CW KEYER - keying together TEENSY PINS 4…Continue
Added by Chuck aa0hw on August 2, 2019 at 3:25pm — No Comments
YPLog is known as one of the most versatile and adjustable QRQ CW Keyer programs of all time...and this video demo's it working well on Windows 10 - to send CW to the Mumble Voice Chat input on iCW
using the new VOICEMEETER POTATOE(VMP) windows…Continue
Added by Chuck aa0hw on July 4, 2019 at 9:32am — No Comments
This is a follow up to the previous video using a CW KEYER:
in this video, QRQ CW from an MFJ-451 CW KEYBOARD is utilized as the example
most of the modern PCs & Laptops on Windows 10 - do not have DIRECT audio INPUT MONITORING available...this video demoS…Continue
Added by Chuck aa0hw on June 30, 2019 at 10:23am — No Comments
webRTC usually comes stock with several audio processing engines in place .... like AGC, NOISE FILTERING, ECHO CANCELLATION which all of them will destroy how QRQ CW sounds over webRTC's OPUS AUDIO CODEC audo processing engines...
used in this example is webRTC from JITSI MEET:…
Added by Chuck aa0hw on June 14, 2019 at 12:56pm — No Comments