Demo: Speakers Become Unintentional Listen Devices Broadcasting Multiple Frequencies (GQRX/Pinetab)

I discovered my speakers unintentionally transmitting as a microphone to a few different frequencies via GQRX recording (computer/Pinetab microphones completely disabled). We listen in remotely to hear all audio the computer is playing + any sounds in the computer's room- speakers unintentionally become a remote microphone. When the speaker volume is turned down, the signal goes down and the broadcast goes away. When the speaker volume is down, it no longer functions as a remote microphone + transmitter. We use Audacity to clean up the audio. GQRX is used to record the signals which are filtered on the Pinetab with internal RTL-SDR. Audio processing/noise reduction done running Parrot Linux using Audacity. We also touch on the fact all electronic devices give off their very own unique electromagnetic emissions which can act as device signatures (strength depends on shielding). In the case of this video sometimes speaker wire not properly shielded (as is found in most PC's) can ac