How do you explain old people needing others to repeat then? Human voice is around 200 Hz - 400 Hz.
What you say is hardly believable.
Well, many older people have hearing loss in the midrange, that is where damage is likely to occur (loud concerts, military, construction, factory work.
Higher frequency hearing loss is usually present in older folks as well but that is not likely causing them have trouble hearing speech.
I think the poster who started this tangent is a little confused about HiFi vs just getting 80% of the sound.
Yes a speaker that plays to about 5-8k is giving you a big chunk of the sound content but that is not what we all want here
I suppose the best way for anyone to test whether they appreciate speakers that provide sound energy above a certain frequency is to remove the content with EQ or active-xover and listen.
If you are happy with a 4-8k cut-off then no need for HiFi. Save $$
Flutes contain a bunch of ultrasonics well above 20KHz. So do vacuum cleaners and air compressors. Lucky we aren't using air compressors and vacuum cleaners in music- we'd all have dead tweeters.
Everyone who uses their speakers for home theater is doing this.
I also listen to tons of electronic music.
There is everything under the sun in that kind of music.
Hearing loss surely has many different ways to damage your hearing.
Might come from infection, improperly performed ear cleaning, severe expose to extremely high sound levels, continuous expose to high [>85dB] sound levels...
I was talking about the shifting from 15000 to 12000 that natural aging seems to avert.
Seem like along the way you stated some other stuff that didn't quite make sense. Yes we will loose some high frequency extension and yet audio will likely still sound very good due to still being able to take in most of the good stuff.