but a little bit angry. It was the first time these sound waves had been extracted and made audible. So what's going on here?

A man’s bass tone, which may be frightening, is raised to a higher pitch to sound softer. However, if an operator cannot tell if a customer is angry, the operator may not be able to react ...

Sometimes I feel like the world's angry neighbor, shaking my fist at ... ANC earbuds actively listen to cancel out incoming sound waves, preserving quiet, and amplifying in-ear sound.