[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

冥想/放松场景应优先选择『反馈式+前馈式混合ANC』且降噪深度≥30dB的机型,能有效压制空调/风扇等低频白噪声(100-500Hz),这是冥想沉浸感的关键频段

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