SoundHound AI (SOUN -1.07%) emerged as a top artificial intelligence (AI) stock to own this year after investors learned that Nvidia had invested in the business. It was a great vote of confidence in the up-and-coming voice AI business that the prestigious company invested in its operations. Many retail investors saw this as a sign that SoundHound may be the real deal and the next big AI stock to own.But when SoundHound reported its earnings numbers, it didn't exactly prove that it was the next Nvidia, and ...