Curious about SoundHound AI's long-term growth potential? Find out which metric you should track. Artificial intelligence (AI) expert SoundHound AI (SOUN 4.54%) has about two decades of operating history and technology development under its belt. At the same time, it's a young company on the stock market. SoundHound AI entered the public stock market by merging with a special purpose acquisition company (SPAC) in the spring of 2022. Ten earnings reports later, the maker of AI-powered voice control systems b ...