*SPAM* current work [gnuradio]
gmkarl at gmail.com
Thu May 20 15:00:59 PDT 2021
Tagged spam because I'm really confused and not sure what I'm saying. And
because I'm still learning about Vikings myself.
I have made two gnuradio blocks! I am a tiny hero!
Using gnuradio blocks lets one move towards working with open freedom
Gnuradio blocks are all documented at the gnuradio wiki.
Everyone's goal of course is a general-purpose workbench, but you have
to start somewhere.
Pad Crop Block:
This is useful for organising wave periods together while
adjusting theorised periods.
note: there may be helpful blocks under Resamplers to
shrink the waves for display if the sample rate is high
rescaling could also be added to pad/crop, or sdl
video, but gnuradio's way seems to be to use a hier block to move
towards user design
Stream Tag Tools->Stream to Tagged Stream
configure this to guess the period of the waveform
openemissions->Tagged Stream Pad/Crop
Video->Video SDL Sink
configure the pad/crop block to output the
periods aligned with the video width
now any similarities between them are visually
clear as vertical bars
PiGPIO Sink Block:
This is useful for driving hardware based on a time-synchronised signal.
In Karl's noiscillate experiment, he has a noise generator
connected via a relay to a raspberry pi pin.
Waveform Generators->Signal Source
configure to a square wave with a low frequency
oscillate power to a device using a relay
now the same flowgraph can be used
mathematically to compare the signal environment with and without the
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