I think this could be plausible as a stunt, but most people don't have the skill it takes to do this and I designed this for a were-mockingbird, so it's in here.
Mimic Sound -1
This character, after being exposed to a sound enough, can mimic it almost perfectly. Using Deceit, this character may mimic any sound that they could justifiably hear often (A guy on the streets won't mimic a jaguar's roar, and a tribal native won't be able to do a police siren). Performance could be swapped for Deceit with justification (like if the character is a comedian who's really good at impersonations). This only applies to general sounds, not speech.
Mimic Voice -1: This character after hearing someone speak for a long enough amount of time (Not a few words, but maybe a short conversation) can mimic that person's voice using Deceit. Just like Mimic sound, this can be used with performance as well.
They're interesting powers (or stunts) for social builds. They have lots of uses too. Have to scare off that criminal? Try a police siren, or mimicing a police officer. Want to distract him so your buddy can knock him out? Mimic the sound of his phone ringing, or mimic a woman calling him over. Wanna scare him? Ever heard a good horror movie scream, and didn't that ghoul you met a few weeks ago have a really creepy voice?