[KongchangAI]
Unverified50% confidenceFactExact time

ANC处理链路存在约1-10毫秒延迟，对频率低于20Hz的次声波和高于1000Hz的高频突发声效果有限，打鼾声频率约在50-500Hz之间

1
Sources
50%
Confidence
Long-term
Relevance
7/8/2026
First Seen

Sources

Anker Soundcore Sleep A20 Sleep Earbuds Drop to Record-Low $99
rss7/7/2026

Related Claims

UnverifiedANC对低频稳定噪音效果最佳，打鼾声主要频率约在50-500 Hz之间82% similarUnverified主动降噪ANC在耳机场景中声波传播距离仅数厘米，系统有约0.1-0.5毫秒的处理窗口82% similar

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Stable URI
https://kongchang.com/claim/278159
API
curl https://kongchang.com/api/v1/knowledge/claims/278159
MCP
get_claim(id=278159)