I have a theory that my sinuses might have something to do with it. My sinus cavities on the front of my face are fairly small, but I know that I have more sinus cavities farther along the roof of my head. I also suffer from TMJ, and the pain in one jaw joint is bad enough that I often can't sleep on that side. So, maybe the internal structure of my skull explains how I hear this sound, and my sinus and jaw problems.
You won't need your hearing to do this test all you need to do is turn on the tv and have the proper measurement equipment and a pair of eyes to see the results on your equipment. So there's no hurry.
I have never met a functioning CRT that I could not easily hear.
eardrum
said
in
nurse
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8 kHz is the max for headphone tests of the eardrum.
12 kHz is the max for nerve conduction (through the skull).
drill
No
little
There is a limit to what anyone could reject. As I say, the sound is similar to the sound of a dentist drill or a jet engine, not just in pitch, but in volume. This is not a subtle effect.
stimuli.
If I watch TV, I often tune out the sound of the TV. Then, again, the sound is louder when there no picture displayed. In fact, I can hear shifts in pitch and volume as a television changes the image it displays, or if it has trouble locking onto an image.
Yes and no. If the intensity is high enough, it may be possible to discern pure tones above 20 KHz. OTOH, hearing the removal of sounds is a different question, and the borderline frequency for most people is around 16 KHz.
There are a probably an infinite number of ways that any assumption could be wrong, but that sheds little light on whether the assumption is correct or not.
Sure there is. The perception of pitch is based on the activation of hairs in a coil-shaped structure in the ear. The finest hairs relate to high frequencies, but they don't go on forever. Basically, you run out of structure at some point in this part of the ear, and the extent and health of this structure sets the highest frequencies that you can perceive. It's not uncommon for this structure to be damaged by listening to excessively loud sounds.
Most people can hear it, at least until they are 25 or so but most people do not know how to focus their listening and blank it out kind of like what my son does when I ask him if he did his homework
There is nothing special about hearing this my hearing is down 30 dB at 8 K(as high as the test at AES went) when compared to 3K and I can easily hear it george
Sometimes I notice this high-pitched sound coming from my TV... (the 2 TV's I have at home: a 14" Toshiba and a 20" LG, so it's not a fault on the TV)
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I have no idea they gave us headphones and had us press a button when we heard sound this was end oct 04 but I also feel(subjectivly ) that I can hear things the tests say I should not be able to Because I can focus my listening and isolate sounds , like a single flute out of a flute section from 150 feet away from the orchestra george
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