SOF Project and Project ACRN

https://www.phoronix.com/scan.php?page=news_item&px=Sound-Open-Firmware

https://01.org/blogs/2018/introducing-acrn-and-sound-open-firmware

https://www.sofproject.org/

SOFProject: Sound Open Firmware is an open source audio DSP firmware and SDK that provides audio firmware infrastructure and development tools for developers who are interested in audio or signal processing on modern DSPs

ACRN:  a flexible, lightweight reference hypervisor, built with real-time and safety-criticality in mind, optimized to streamline embedded development through an open source platform

https://projectacrn.org/