Unverified70% confidenceDecision RuleTime unknown
定时关机若只有开/关而无'渐弱淡出'功能，突然断音容易在浅睡期惊醒；带fade-out渐弱的定时功能更适合入睡后自动停止的省电需求
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70%
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Long-term
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Unverified定时关机功能需支持渐弱淡出（fade-out），突然断音反而可能惊醒浅睡者；只有硬切断电的定时功能助眠体验差94% similarUnverified定时关机与「淡出关机」（fade-out）不同，淡出款在关机前逐渐降低音量避免突然安静惊醒，浅眠者应认准fade功能而非硬性断电90% similarUnverified定时关机功能优先选支持'渐弱淡出(fade out)'而非'突然静音'的机型，突然断声反而可能把浅睡眠者惊醒，淡出更平滑89% similarUnverified定时关闭功能应支持'渐弱淡出'（fade-out）而非硬性断电，突然静音会因'静默反差'把已入睡者唤醒；选购时确认是否有淡出功能且时长可调（理想15-30分钟渐弱）89% similarUnverified定时关机功能要看是否支持「淡出渐弱（fade-out）」而非硬性突然停止；突然断音会因环境音变化把浅眠者惊醒，渐弱关机的机型更适合入睡定时使用。89% similar
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