Comic Discussion > QUESTIONABLE CONTENT
WCDT (HA!) 12-16 July 2010 (1706-1710)
jwhouk:
...I could only hear the 8 KHz tone. :oops:
Kugai:
I wonder if she speaks with Dolphins?
Akima:
--- Quote from: Carl-E on 14 Jul 2010, 17:15 ---Check it out yourself![/url
--- End quote ---
Do the crappy speakers/soundcards on computers reliably go "up" into these very high frequencies?
I used to work for a manufacturing company that insisted on mandatory hearing checks pre-employment, and every year thereafter, for everyone who worked in a "process environment" (presumably for OHS-insurance purposes). I was included because the server-farm/computer room counted as a process environment. The test involved huge bulky headphones in a special testing booth built into the back of a converted bus.
akronnick:
--- Quote from: Carl-E on 14 Jul 2010, 17:15 ---I actually had an odd hearng "dropout", which I found out when I worked at a public radio station. We broadcast the Met operas, and they would send a full spectrum of tones, from 20 Hz (you don't hear that, you feel it) to 24 kHz. The idea was to tweak the soundboard so that the full spectrum was being broadcast.
I could hear everything except the 15 - 17 kHz range, and above 21 kHz. It faded then returned, and the only way I knew they were sending those tones was the announcement and the VU meter pegging. But those high tones - they were killers. The older engineers just looked at me covering my ears, ad laughed.
That was over 20 years ago, but I can still hear up to 14 kHz (anything higher is gone, and so I can't hear the 15 kHz mosquito ring).
Check it out yourself!
This has been another public service brought to you by WCDT and Coffee of Doom. Come try our new sanitary lattes!
--- End quote ---
I'm getting the same fade in and out effect, can't hear 16-19kHz, but hear 20-22kHz just fine, albeit faintly. Of course it may have something to do with the crappy headphones I'm using, so I'm not going to rely on this test, but I can still hear the dog whistle at the end of Sgt. Pepper, so I guess I'm doing OK.
Tuitsuro:
--- Quote from: Carl-E on 14 Jul 2010, 17:15 ---Check it out yourself!
--- End quote ---
I could hear up to 19 kHz, and nothing past that; but I'm definately feeling a pressure on my eardrums past that. Incidentally, I'm using some fairly new logitech speakers; the box says they're 10-watt speakers with frequencies from 70 Hz to 20 kHz, which may well be *why* I'm not hearing anything.
I also tried using an app on my Android cell, on that thing I could hear up to around 17.220 kHz before it began to cut out, so probably somewhere around that range for me. It actually has a nifty extra feature where you can shift the sine wave type, using that I could well hear up to 21.930, but it added white noise so it's sort of like cheating.
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