Unverified50% confidenceFactExact time
早期语音AI系统受限于端点检测（VAD）技术，本质上是半双工架构
1
Sources
50%
Confidence
Long-term
Relevance
7/15/2026
First Seen
Sources
Related Claims
Unverified早期语音AI系统如微软Cortana、亚马逊Alexa依赖VAD（端点检测）作为半双工架构，在嘈杂环境中脆弱79% similarUnverified早期AI语音系统普遍采用半双工设计，主要因为回声消除的工程复杂度较高79% 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.79% similarUnverifiedFull-duplex voice interaction requires two key underlying capabilities: Echo Cancellation and Voice Activity Detection (VAD).74% similarVerifiedEarly voice assistants such as Siri and Alexa adopted a "speak–pause–respond" pipeline architecture, which is essentially half-duplex.74% similar
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