SoundHound, a voice assistant maker, will go public through a merger with Archimedes Tech SPAC Partners Co. values the voice assistant maker at $2.1 billion, the companies said on Tuesday. SoundHound, founded in 2005 by a group of Stanford graduates, offers a voice platform based on artificial intelligence to help businesses integrate conversational voice assistants into their products. Hyundai Motor, Mercedes-Benz, Mastercard, and Snap are customers.