On: Wearable Microphone Jamming

[Johnythree]

Non-linear circuits l̶o̶t̶s̶ ̶o̶f̶ ̶c̶i̶r̶c̶u̶i̶t̶s will fold higher frequencies down into lower frequencies

[grandinj → Johnythree]

Pretty much most circuits are non-linear, for real-world circuits "linear" just means "linear within normal operating range"