Unverified88% confidenceDecision RuleTime unknown
被动隔音效果取决于耳塞套材质与贴合度：泡沫记忆棉套隔音比硅胶套高约3-5dB，但闷热易脏；实际购买后应更换3种尺寸耳塞套测试密封，密封不良会同时导致隔音差和低频严重衰减
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Unverified入耳式降噪耳机对耳道密封度依赖极高，耳塞尺寸不匹配会导致降噪和低频严重损失，购买后必须试戴至少3种硅胶套并做贴合测试92% similarUnverified耳塞套材质决定密封性：硅胶套佩戴异物感低但隔音一般，记忆海绵套(如Comply)膨胀贴合耳道可额外提升5-8dB被动隔音，但需每2-3个月更换且吸汗易脏90% similarUnverified降噪效果与佩戴密封性强相关：入耳式Pro 2需用配套三/四种硅胶耳塞做密封性测试选对尺寸，尺寸不对降噪和低音都会大幅衰减90% similarUnverified耳塞套材质决定被动隔音上限：记忆棉(海绵)套隔音比硅胶套多3-5dB且贴合度更高，但透气差、易脏需1-2月更换；追求隔音选记忆棉，追求耐用和清洁选硅胶90% similar
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