Unverified90% confidenceDecision RuleTime unknown

NRR值降噪需按公式换算：实际降噪≈(NRR-7)/2 dB，标称NRR33的耳塞实际约降噪13dB，睡眠场景选NRR≥30最佳

1

Sources

90%

Confidence

Long-term

Relevance

-

First Seen

Sources

Related Entities

隔音耳塞category

Related Claims

UnverifiedNRR值需换算实际隔音效果：实际衰减≈(NRR-7)÷2 dB。NRR33的耳塞实际约降噪13dB，睡眠打鼾（约60-90dB）需要NRR≥30，飞机客舱（约85dB）NRR≥25即可92% similar UnverifiedNRR值不能直接等同于实际降噪量，实测降噪约为(NRR-7)/2 dB。NRR33的耳塞实际约衰减13dB，选购时看NRR≥30才能应对80dB以上环境（如地铁、割草机）86% similar

Cite This Claim

Stable URI

https://kongchang.com/claim/356199

API

curl https://kongchang.com/api/v1/knowledge/claims/356199

MCP

get_claim(id=356199)