What is VAD?

Voice Activity Detection — telling speech from silence.

Voice Activity Detection distinguishes speech from background noise and silence. It gates when a system listens and when it considers a turn complete, and it is why a noisy environment degrades turn taking rather than just transcription.

This is an industry glossary. A term defined here is not a statement that Drop AI provides it — see the pricing page for what is included.

Endpointing

Detecting the end of a caller's utterance.

Turn taking

Deciding when the caller has finished speaking.

Noise suppression

Removing background sound from call audio.

Voice AI

More in this category

Voice agent Conversational AI ASR STT TTS LLM System prompt Function calling Tool use Knowledge base RAG Grounding

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