Gstreamer Script used in this demo:
gst-launch-1.0 -v audiotestsrc wave=ticks apply-tick-ramp=false tick-interval=100000000 freq=2000 volume=0.5 sine-periods-per-tick=40 ! audioconvert ! autoaudiosink
also being shown in this demo is CW REGENERATION, using ZAMGATE in sidechain mode
NOTE: the recording laptop's Gstreamer version was too outdated, and does not contain the full array of Gstreamer elements that are needed to adjust the pulse generator frequency and timing...so a PI2 with the latest pi-os was used instead as the source of the pulse generator Gstreamer setup...