I don't understand how some of these merit patenting. Page 11, for instance, describes a patent on Comparing Voice Signals which seems to be an extremely simpl

I don't understand how some of these merit patenting. Page 11, for instance, describes a patent on Comparing Voice Signals which seems to be an extremely simple form of data augmentation - playing an audio file backwards and rearranging chunks of it. That's hardly groundbreaking.