KDFC’s Play On blog featured the Ragazzi Virtual Studio:
Necessity is the mother of invention, as they say, but sometimes frustration is too. When software engineer Mike Dickey’s son was unable to practice in person with his ensemble, the Ragazzi Boys Chorus, they were prevented from having workable rehearsals using Zoom or FaceTime because of the delay known as “latency.” It’s not really a problem generally for conversations, but when you’re singing with anyone, or just trying to keep a steady rhythm going with another remote musician, the time it takes for your performance to get to them, and theirs to you, adds up and makes it impossible. There are some hardware solutions to address the problem (which we’ll be exploring soon) but Dickey came up with a software-based solution that reduces the latency to durations that are small enough (about 25–35 milliseconds) to allow for music to still feel together. It was developed in a partnership with Stanford’s Center for Computer Research in Music and Acoustics, or CCRMA, and the JackTrip Foundation, and is called Virtual Studio.