The Dual DMIC Auto-Select Virtual Controller is a software component related to audio functionality, typically for Windows-based systems, that supports dual Digital Microphone (DMIC) configurations. DMICs are microphones that communicate through a digital interface (such as I2S), providing better audio quality than analog microphones. The "Auto-Select" feature likely helps automatically detect and switch between different audio input sources or mic configurations.

In a system with dual microphones (e.g., stereo or array microphones for noise cancellation or spatial audio), this driver enables the software to manage the selection of which microphone to use, depending on which one provides better audio or is active.