Item — HN Reader

> "frequencies used in remotes like the Space Command were too high for the human ear to pick up"

Pretty sure I used to be able to hear the different high pitched whines as a child (bearing in mind children can hear higher pitched sounds than adults).

2 comments

Some adults have unusually high hearing range too. I’m almost 40 and yet can easily detect sounds up to 25khz, sometimes higher depending on the strength.

I could! Maybe it was a clicker though, don't remember, just that I could hear it.