NullPresence taps the system audio mix, transcribes speech as it happens, and puts the answer in a floating overlay that screen capture doesn't record.
A native C++ module taps the system audio mix through WASAPI — no virtual cable, no driver hack, and no frames lost waiting on a scripting runtime.
Silero VAD cuts silence before it ever reaches transcription, so the pipeline reacts to speech instead of to dead air.
Two interchangeable backends: Deepgram for cloud-grade accuracy, or faster-whisper running fully on-device when audio shouldn't leave the machine.
Answers render as formatted markdown in a compact popover, with searchable history so a past answer is a few keystrokes away.
NullPresence is open source. Code, build instructions, and issues live on GitHub.