The repo has implementing an esp32 standalone snips-audio-server and the Matrix Voice, a 8 mic array board with a ledring. See https://www.matrix.one/products/voice. Everybody is welcome to add features or solve issues.
xc3sprog is a suite of utilities for programming Xilinx FPGAs, CPLDs, and EEPROMs with the Xilinx Parallel Cable and other JTAG adapters under Linux. Used to program the FPGA of the MATRIX Creator/Voice via Raspberry Pi.