Exras
Years ago I wanted to do that on windows and found out that there was something called protected memory, now it finally looks like I can experience that fun again, although at a slower pace it seams ;-)
I like it, reminds me of the discovery of the Cosmic background radiation by Penzias and Wilson with the Holmdel Horn Antenna. Accept this time nobody had to shovel bird shit :-)
An image search on PowerPoint remote will fill the screen with different devices.
What other windows app has that same kind of hardware support?
The video: No, it shows how to 'record what you hear' (windows mixer) nothing to do with the speakers.
I would claim that it is impossible to record from speakers that are connected to low impedance running output amps and record from them at the same time.
So if the speakers are playing music they are not recording your sing-a-long also.
I can't imagine that pulsed digital transmission on 10Ghz would not create noise in the lower harmonics bands at all. The meter also have a sound mode where you eg. can hear the ~8-10Khz modulation of the mobile ~700/900/1900/2100Mhz signal.
You can clearly hear the difference between different transmission types as DECT phones, Wifi, GSM/LTE, and EM noise in general(PC's/HDMI cables/USB3 HD docks)
My central room heater has a small CR battry powered computer (that I had forgot all about) that calculate the bill and transmit the results every 2 minutes on 2.4Ghz
it makes a tiny ~0.5 sec pulse on the display/audio, and I thought for an hour that I had a hidden transmitter in my apartment, since turning the mains fuse off had no effect.
I had to clear the room of all tech to track down the source, felt a bit stupid when I finally found it.
So going down this road has some up's and down's vs staying totally oblivious of ones electromagnetic environment.
Found it: Pacemaker - putting the heart back into the healthcare industry. https://youtu.be/jG9BgjnpGGY?t=940
I would recommend something like the 'Cornet ED78S RF Meter' to every technician with the tiniest amount of AU in circulation.
The reason I got it was because I have become electro-sensitive, and that's almost a death sentence in the modern city.
Those pictures of Stallman sitting on a mountain top and not a mobile phone mast in sight looked very appealing...
My phone LG-L80 99£ is GSM only, all else is off, apps downloaded on wired PC and installed via ADB interface.
Currently used as book reader for C++11 fourth edition and as Wikipadia offline reader(Kiwix) 12GB on SD card - music/mp4 player and the battery last for a week or more.
I feel I'm in control of my phone, don't know if that is justified or not?