In some of the larger chambers though, these intensified sound may be too deep for us to hear, we can feel it.

尽管在一些较大的房间里，这些强化的声音可能太深以至于我们听不见，但我们能感觉到。

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Let's talk about the other end of the acoustical spectrum, sound that is too high for humans to hear—ultrasound.

让我们来谈谈声谱的另一端，人类听不到的声音——超声波。

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That made it hard for others to hear her sound.

这使得其他人很难听到她的声音。

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The rockus also features a dedicated music mode optimized for superb stereo sound reproduction, letting you hear your music with clarity and fidelity.

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The bone conduction transducer allows the wearer to hear audio without the need for in-ear headphones - sound waves are instead delivered through the user's cheekbones and into the inner ear.

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"What we want is to take the time in this forum to not just hear a quick sound bite -'yes, I'm for reform of don't ask, don't tell', " he told the BBC News website.

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