Voice Interfaces

Voice Interfaces (VUI) enable hands-free, eyes-free device interaction: think Amazon Alexa, Google Assistant, and Apple Siri.

VUI technology is a system for human-computer interaction (HCI) leveraging speech recognition and Natural Language Processing (NLP) to convert spoken commands into actionable tasks. This hands-free paradigm drives massive market growth: the global VUI market was valued at $19.73 billion in 2022, with projections indicating 8 billion digital voice assistants in use by 2024 (Source 10). The core mechanism relies on three components: speech recognition to digitize the utterance, NLU to determine user intent, and text-to-speech synthesis to generate the audible response (Source 3, 4). This conversational model streamlines operations across smart homes, mobile devices, and enterprise applications.

https://www.interaction-design.org/literature/topics/voice-user-interfaces