Unverified72% confidenceDecision RuleTime unknown
定时关机若只有固定30/60分钟档位不实用，优先选支持渐弱淡出（fade-out）的机型，突然断音反而会惊醒浅睡者
1
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72%
Confidence
Long-term
Relevance
-
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Unverified定时功能必须支持'渐弱关闭'(fade out)而非硬切断，硬切断在入睡临界点会因声音突然消失把人惊醒，优先选带30-60分钟渐弱定时的机型93% similarUnverified定时关机若只有固定档位（如30/60/90分钟）不如带渐弱淡出（fade-out）功能的机型，声音突然中断反而会惊醒浅眠者，淡出关机体验更好93% similarUnverified定时关机功能应确认支持渐弱（fade out）关闭而非骤停，突然断声反而可能惊醒浅睡者；同时优选可设定多档时长（如30/60/90分钟）的机型93% similarUnverified定时关机建议选支持15/30/60/90分钟多档且带渐弱淡出（fade-out）的机型，突然断音容易惊醒浅眠者，渐弱设计能平滑过渡到无声92% similarUnverified定时关机功能必须选带'渐弱淡出'（fade-out）的机型：硬性到点静音会因声音的突然消失把浅睡者惊醒，理想的淡出时长应≥30秒；仅有'定时'而无淡出功能的产品在助眠场景是明显缺陷92% similar
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