huangblue / sleep

搜集促进睡眠,音乐与学习等的相关信息
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脑波音乐,频率不在人耳能听的范围内,怎么起作用? #2

Open huangblue opened 8 years ago

huangblue commented 8 years ago

听范围:20-20000HZ 脑波音乐:8-13(14)HZ