how to implent watermark into mp3?
Hi there,
im looking for a way to implent watermarks into audio(mp3) files.
I thought of just generating a voice speaking some code and mix it into the audio file.
it shall not disturb the audio, so i thought about stretching and/or phase-shifting it to some frequency humans cannot hear.
Would that work and wich (commandline)tools can be used to do this scriptable?
i would prefer to run the script on a LAMP-Server...
Or maybe there is another way?
greetings :-)
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