4 ms·

Is it possible to hide these signals in a song? I mean play song + signal simultaneously and extract the signal.

• gbolcer 6y ago
  ...and exactly the second thing I was going to try!
• wyldfire 6y ago
  Yes, absolutely. Either in audible frequencies but too quiet to notice, or perhaps in inaudible ones. Though the inaudible frequencies are ones that might get filtered by whatever transmission media you're using.