Re: Defeating Music Identification Apps - Adding Gaussian Noise?

On 4/9/26 16:49, Chris Caudle wrote:
> On Wednesday, April 8, 2026 10:28:40 PM Central Daylight Time Ivan K wrote:
>> Also I have read how one can add a bit of gaussian noise to a sound file,
>> and while to the human ear, the music sounds identical, adding this noise
>> can interfere with or prevent these identification apps from identifying
>> the music.
> An easy way to think about this is consider what would happen if you played
> music on a device with slightly worse signal-to-noise ratio, which is what
> additive Gaussian noise would be, just a slight increase in white noise.
>
> Would a music identification app be useful at all if it failed to work if you
> had less than studio quality playback equipment?  Obviously not, so I would
> say it is equally obvious that it is very unlikely to be true that simply
> adding an unnoticeably small amount of white noise to a sound file will defeat
> an identification app.
>
Hmm, very true. I think Chris is right.

Maybe instead  play audio from *your* device through headphones to each 
student. Then it doesn't go through *their* device capable of running 
song recognition apps.

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