Unverified50% confidenceFactExact time
The browser Web Speech API's SpeechRecognition does not consistently and reliably expose raw audio frames and confidence scores, so applications cannot customize thresholds or do local frame processing, making it unsuitable for 24/7 always-on wake word detection.
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50%
Confidence
Long-term
Relevance
10/19/2026
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Related Claims
UnverifiedThe recognition quality of the Web Speech API depends on the browser implementation; mainstream browsers such as Chrome usually call cloud-based speech services behind the scenes, so it is not fully offline, and its robustness for non-English languages and noisy environments is limited.74% similarUnverifiedCapacity handling for voice systems cannot simply replicate the rate-limiting approach of web backends, because voice must continuously produce sound throughout the entire process to maintain the user's perception of being connected.71% similarUnverifiedWeb Audio API 的参数调度运行在独立的音频渲染线程上，拥有比 JavaScript 事件循环更高的时间精度，不受主线程调度延迟影响70% similarUnverifiedSpeechFast is not suitable for users who pursue the highest recognition accuracy or need advanced features such as multi-speaker separation and long-audio transcription.70% similar
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