[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

白噪音/声音掩蔽类助眠仪应支持定时关闭(如30/60分钟)和非循环无缝音轨,音轨过短会出现衔接断点反而惊醒;纯音量掩蔽建议控制在50dB以下避免听力损害

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