: It functions like a physical patch cable. You set one application's output to the virtual "Input" and another application's input to the virtual "Output". Unidirectional Flow
If you nodded "yes" to any of these, you are looking for a . virtual audio cable
A Virtual Audio Cable (VAC) is a software-based driver that acts as a digital bridge, allowing audio to be routed between applications without physical hardware. It functions by creating "Playback" and "Recording" devices, enabling users to direct audio output from one application into the input of another, commonly for content creation or voice processing. For a detailed 2025 guide on setting up Virtual Audio Cables for streaming and production, read the full article at Jingyi Audio : It functions like a physical patch cable