OpenAI announced a voice-cloning tool it plans to keep tightly controlled until safeguards are in place to thwart audio fakes meant to dupe listeners. A model called 'Voice Engine" can essentially duplicate someone's speech based on a 15-second audio sample, according to an OpenAI blog post sharing results of a small-scale test of the tool. Disinformation researchers fear rampant misuse of AI-powered applications in a pivotal election