If it's going to navigate, it needs those sounds to be broadcast and bounced back from objects in its path.

如果它要导航，它需要播放这些声音，并让声音被路径上的物体反弹回来。

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These sounds travel underwater until they encounter objects, then bounce back to their dolphin senders, revealing the location, size, and shape of their target.

这些声音在水下行进，直到遇到水下物体，然后返回到发出信号的海豚，显示出目标的位置，大小和形状。

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Pay attention to your breathing, to everything around you, to the sounds and light and texture of objects.

专注于你的呼吸，你周围所有的事物，光影以及事物的质地。

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Instead of using traditional voice navigation, however, the SWAN uses what the researchers call "3D audio cues, " which consist of navigational beacons that the person is supposed to walk towards, and secondary sounds informing them of nearby objects or changes in walking surfaces.

ENGADGET: SWAN: System for Wearable Audio Navigation