Unverified90% confidenceDecision RuleTime unknown
睡眠助眠优先选带无缝循环(seamless loop)音源的机型，劣质机型每30-60秒会出现明显的循环断点声，反而会在浅睡期惊醒用户
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90%
Confidence
Long-term
Relevance
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Unverified睡眠助眠优先选带真实白噪音发生器（非循环音频）的机型，循环音频每20-30秒的接缝处会形成可感知的重复节点，反而干扰入睡浅睡期93% similarUnverified定时关机功能优先选可设「入睡渐弱」而非硬切断的机型，声音戛然而止容易惊醒浅眠者91% similarUnverified睡眠用途选择音频时长应≥8小时或支持无缝循环（loop），带渐弱结尾的短音频会在夜间中途停止导致惊醒90% similarUnverified睡眠场景优先选择支持定时渐弱（fade-out）而非硬停的机型，音量在设定时间前10-20分钟逐步衰减，避免突然静音导致的浅睡眠中断惊醒89% similarUnverified睡眠敏感者不要买只有定时关机(如自动1小时后停)而无循环播放模式的机型，噪音突然中断会导致中途惊醒，应选支持整夜连续播放或渐弱(fade-out)的机型88% similar
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