Previous research found that the painful parts of unpleasant sounds appear to be in the middle range of audible frequencies.

先前的研究发现，能够引起不快的声音中那些令人痛苦的部分处在可听频率范围的中间。

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The following diagram shows the audible range of a normal human ear.

以下图表显示正常人耳的听觉范围。

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At the moment we are only using limited sounds audible for us among their wide sound range.

鲸鱼的叫声音区很广，而目前我们只能通过人耳可听到的声音与它们交流。

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Philips DoubleBASS uses the powerful processing of the system to detect ultra-low frequencies and then recreate them within the audible frequency range of the subwoofer, giving the impression of delivering bass down to an amazing 20Hz.

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