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遮蔽办公室或合租噪音要看最大音量能否达到70-85dB，低于60dB的入门机在嘈杂环境几乎无效

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Unverified遮蔽室外噪音（如街道、空调外机、邻居装修）需要机型最大音量能达到70-85dB，很多助眠向机型峰值仅50-60dB，无法真正掩盖中高频噪音88% similar Unverified遮蔽环境噪音需要机器最大音量能达到约70-85dB（约等于淋浴声），仅40-50dB的迷你机型只能做背景音，无法盖过隔壁说话声或酒店走廊噪音87% similar Unverified掩蔽环境噪音(如街道、隔壁说话声)需要机器最大音量能达到约75-85dB，很多迷你便携款最大只有60dB左右，无法有效遮盖交通噪音87% similar Unverified掩盖持续性噪音（空调外机、马路车流）需要机型最大音量能达到70dB以上，很多迷你机型最大仅50-60dB无法有效掩蔽，选购看标称音量或用户实测87% similar Unverified噪音≤55分贝为静音机型（办公室、深夜可用），55-65分贝为普通水平，>65分贝在安静环境明显扰人；无刷电机通常比有刷电机噪音低5-10分贝87% similar

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