Voice interfaces are human-computer interaction systems that accept spoken input and respond with synthesised speech, chaining automatic speech recognition, natural-language understanding, dialogue management, and text-to-speech. They enable hands-free, eyes-free interaction across smart speakers, vehicles, and accessibility tools. Latency, recognition accuracy in noise, and natural turn-taking are the principal usability constraints.
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- A typical voice pipeline performs wake-word detection, streaming ASR, intent parsing, response generation, and TTS, increasingly powered by end-to-end neural models and large language models. Design challenges include disambiguating commands without visual context, handling barge-in and interruptions, and preserving privacy given always-listening microphones.