Voice AI is a $140 billion market opportunity, and this company's technology could make it a big-time winner over the coming years.Sound and voice add an additional layer to artificial intelligence (AI) that often seems to fly under the radar. However, make no mistake about it, voice AI technology presents a massive opportunity and is crucial to delivering AI to real-world, consumer-facing applications.SoundHound AI (SOUN 3.71%) is among the leaders in this field, and its stock price has risen over 205% ove ...