Thanks for pointing that link out. AWT also have a certain number of customers:kiezum wrote: On the 2nd page they discuss the technique and there's a link to an watermarking algorithm that can do it in 100x realtime. So encoding an audiostream in realtime should be possible (http://audiowatermarking.info/awt1_details.php).
https://audiowatermarking.info/customers.php
Cheers.