3 ms·
A pure tone. At 110 dB SPL. On one study. Yes, if you blast humans with enough energy in any form they will eventually notice. This is not a relevant result fo
by marcan_42 5y ago
A pure tone. At 110 dB SPL. On one study.
Yes, if you blast humans with enough energy in any form they will eventually notice. This is not a relevant result for music.
- threeseed 5y agoBy all means provide an alternate study that shows 20Khz is the limit for human hearing. Because from all accounts it is a myth.
- Dylan16807 5y agoIf they can only hear it way above the threshold of physical damage, that's a good anecdote but it's definitely not relevant to music playback. Sensitivity to audio falls off a cliff as you approach 20KHz.
- simondotau 5y agoAnd that assumes you have young ears. If you're older, chances are it's nowhere near 20kHz.
- marcan_42 5y agoAt normal listening levels, yup. I'm 30 and I can certainly hear the hideous 19 kHz anti-rat blasters they have all over shops in Tokyo (and I think they almost certainly cause ear damage and should be illegal - IIRC they are marketed as putting out 138dB SPL!) but I am rather unlikely to hear the difference between music low-passed at 19kHz and 20kHz.
- simondotau 5y ago> I am rather unlikely to hear the difference Especially if your hearing has been damaged by repeat exposure to 19 kHz at 138dB SPL.
- marcan_42 5y agoI do try to run away or cover my ears when I run into them...
- simondotau 5y ago> from all accounts From all accounts? Don't you mean from one account?
- simondotau 5y agoWow, 26Khz at 110 dBSPL? That's just stupid. You might as well argue that incidental exposure to wifi is certainly fatal because you wouldn't survive being cooked inside a microwave. 110 dBSPL represents thousands of times more energy (in watts) than you could plausibly expect in any musically derived ultrasonic content played at a volume level which doesn't pose a significant risk of permanent hearing loss. At such insane power levels, obviously nobody will be hearing the actual frequency but rather sub-harmonics and/or other physical sensations derived from that moronic level of sound pressure.