Unverified50% confidenceFactExact time
传统语音助手依赖固定唤醒词如Hey Siri或OK Google，底层为轻量级关键词检测模型
1
Sources
50%
Confidence
Long-term
Relevance
7/19/2026
First Seen
Sources
Related Claims
UnverifiedTraditional voice assistants are based on intent recognition and slot-filling technology and can only handle predefined command templates.76% similarUnverified传统语音助手（如早期Siri、小爱同学、小度）基于意图分类和槽位填充技术，将语音映射到预设的有限指令集，无法处理语义模糊或开放性表达76% similarUnverifiedEarly voice assistants such as Siri and Alexa used VAD (Voice Activity Detection) to determine whether the user had stopped speaking, a mechanism that is inherently half-duplex.75% similar
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