[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

0-3个月新生儿优先选择胎内音/子宫音(模拟血流与心跳),因其接近宫内声音环境安抚效果最强;4个月以上可过渡到白噪音(如雨声、风扇声),持续单调声音更适合大月龄宝宝

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