On Bosön in Stockholm, the WC and EC medalist Karlsson gets to try and test the new system that is challenging for the athletes.

- You should get used to listening to sound and relate to it.

Thinking about it while running at full speed will take a while to learn, she tells SVT Sport who took part in the first real test of the system.

Watch Viktoria test the sound tunnel and tell about how she experienced it.

Javascript is disabled

Javascript must be turned on to play video

Read more about browser support

The browser is not supported

SVT does not support playback in your browser.

We therefore recommend that you switch to another browser.

Read more about browser support

She will jump further with the help of the sound tunnel