Thread: E-reader that doesn't make noise
View Single Post
Old 09-17-2022, 05:29 PM   #20
j.p.s
Grand Sorcerer
j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.j.p.s ought to be getting tired of karma fortunes by now.
 
Posts: 5,819
Karma: 104541785
Join Date: Apr 2011
Device: pb360
Quote:
Originally Posted by JSWolf View Post
I'm almost 59. But even putting my Libra 2 to my ear I was unable to hear anything. I've had a touchscreen reader since the Sony Reader PRS-650 was released.
The highest frequency sound that can be detected by a human decreases with age, as early as 20 years old (probably even younger). There are devices that emit sound piercingly loud to teenagers that most adults don't hear at all.
j.p.s is offline   Reply With Quote