Windows Virtual Audio Cable

Route mic input to multiple apps (speech-to-text + voice chat) without exclusive access conflicts.

When an application plays audio to a VAC output device, the audio data is written into a shared (ring buffer) in kernel memory. Any application reading from the corresponding VAC input device retrieves that same data from the buffer. windows virtual audio cable

+------------------------+ +-----------------------+ +------------------------+ | Application A (Out) | ---> | CABLE Input (Device) | ---> | CABLE Output (Device) | ---> [Application B (In)] | (e.g., Game, Spotify) | | (Virtual Audio Endpoint) | (Virtual Microphone Target) | (e.g., OBS, Discord) +------------------------+ +-----------------------+ +------------------------+ Route mic input to multiple apps (speech-to-text +

Click and approve any Windows Security prompts. windows virtual audio cable

[App A] → (Play to VAC Line 1) → [Kernel Ring Buffer] → (Record from VAC Line 1) → [App B]