infrasound

听听怎么读
英 ['ɪnfrəsaʊnd]
美 ['ɪnfrəˌsaʊnd]
是什么意思
  • n.

    次声(风暴产生的低频音波);

  • 英英释义

    Infrasound

    • Infrasound, sometimes referred to as low-frequency sound, is sound that is lower in frequency than 20 Hz (Hertz) or cycles per second, the "normal"limit of human hearing. Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be sufficiently high.

    以上来源于:Wikipedia

    学习怎么用

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