If your high-frequency hearing range is restricted due to age, then you can't hear things that other people can. Here's a real-world problem that I can't hear. Can you hear it?

Note: This is an updated version that corrects a problem with the original video. The original is still available at [ Ссылка ] Can you hear the problem? See Betty and Debbie discuss my error [ Ссылка ]

CREDITS

The good speakers illustrated are Wharfedale Diamond 121, which are average hi-fi loudspeakers. The 'bad' speakers are Logitech Z200, which are OK for their purpose but of doubtful value for this test.

The headphones illustrated are Sennheiser HD400S wired. Bluetooth headphones may work but your mileage may vary.

CRT television - Sony KD-34XBR970 34" Wega™ XBR® high-definition TV, presumed to be a manufacturer's publicity photo.

CRT - Blue tooth7 CC BY-SA 3.0

Flyback transformer - Appaloosa CC BY-SA 3.0

Music - Just one of my doodles

свернуть