Unverified85% confidenceDecision RuleTime unknown
降噪深度看主动降噪(ANC)量级，头戴式旗舰可达40-48dB，飞机/地铁通勤优先选头戴式且宣称降噪≥40dB；入耳式受限于结构通常30-40dB
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Unverified主动降噪(ANC)深度≥40dB才能有效压制飞机/地铁的低频轰鸣声，长途飞行/通勤优先选头戴式；入耳式ANC通常在25-35dB区间91% similarUnverified通勤/飞机降噪需求，选主动降噪深度≥40dB且支持宽频降噪的头戴或入耳式，仅标注'ANC'不注明深度的多为40dB以下的入门降噪87% similarUnverified长途飞行/地铁通勤选主动降噪(ANC)机型时，看降噪深度参数≥40dB才能有效压制发动机低频轰鸣，单纯被动隔音的入耳式最多衰减25-30dB且对低频无能为力87% similarUnverified主动降噪深度看dB衰减：入门款约20-25dB，旗舰款可达40-45dB。飞机/地铁通勤需≥30dB才能有效压制低频轰鸣，办公室/咖啡厅噪音以中高频人声为主，降噪深度作用有限，此时被动隔音（耳罩包裹性）比ANC更重要86% similar
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