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This article introduces the architecture of smart speaker voice interaction systems, covering wake‑word activation, automatic speech recognition (ASR), natural language understanding (NLU), skill processing, text‑to‑speech synthesis (TTS), and the key performance and testing metrics for each component.
The article surveys Tencent’s recent advances in smart‑speaker voice interaction, detailing a full technology chain—from front‑end capture, wake‑up and enhancement, through speaker verification and short‑speech voiceprint, to TDNN/LSTM speech recognition, target speaker extraction, and end‑to‑end attention modeling for robust, personalized performance.
The article interviews JD DingDong's chief scientist to detail the speaker's three‑year evolution, covering microphone‑array technology, advanced Chinese speech recognition, custom wake‑word solutions, integrated NLU methods, product‑technology trade‑offs, and future directions for the AI‑driven smart speaker.