Grumpy Old Geeks Topics Acoustic communication across an air gap Topic Acoustic communication across an air gap 3 mentions in 1 episode The hosts discuss research into sending data between disconnected computers using sound. Mentions 37: Heaven Knows I'm Miserable Now Dec 7, 2013 1:10:45 malware can now jump the air gap between computers 1:11:35 usually done with high frequency audio signals 1:15:55 more than 60 feet apart at a rate of approximately ... 20 bits per second