4 ms·
If it is a well known song - maybe the audio coudl be subtracted - noise cancellation style to remove the rogue song.
by bmsleight_ 5y ago
If it is a well known song - maybe the audio coudl be subtracted - noise cancellation style to remove the rogue song.
- recursive 5y agoIf it was recorded by a microphone in a space, then that won't work. Time and frequency inaccuracy in playback by speaker, sound reflections, and inaccuracies in recording by microphone all contribute to a signal. The original can be recognized, but simple subtraction will never remove it.
- cellularmitosis 5y agoBut keep in mind the goal isn’t perfect removal. You only need to disrupt the audio hashing algorithm.
- netr0ute 5y agoThis is untrue, things like Fourier transforms can account for those variables.
- recursive 5y agoI'd love to see a demonstration of this. (not of a FFT, but use of one to remove one signal from another)
- netr0ute 5y agoThey might have done this to extract instruments, and if you can extract one then maybe you can just subtract it from the main recording. https://www.sciencedaily.com/releases/2008/10/081030201607.htm https://www.sciencedaily.com/releases/2008/10/081030201607.h...
- recursive 5y agoIdentifying the fundamental pitches of notes in a chord is a far cry from subtracting them out of a recording.