In a silent room, why can I hear high pitched sounds in my ears that fluctuate randomly?
Have you ever heard (pun intended) of Tinnitus? Well, you have it. The bad news is, it tells you that you have some ear damage. The other bad news is that there are some things that make it more bearable for some people, but not for everyone. The worst news is that is not curable at this time.The good news is, that if you are careful, it is not progressive. It is caused by environmental factors (Rap, loud machinery, gunshots,fevers, or drugs) and usually does not get worse, if you stay away from the causes. So far, you only hear it at very low ambient noise, mine will drown out speech in livingroom conditions.For some strange unknown reason, the Quorabots won’t let me use a credential that mentions tinnitus, even though I am something of an expert on the topic. Thanks for asking, and I hope it doesn’t get worse for you until there is a cure.
Tv has high-pitched squealing ?
Somewhere in the power supply or the high voltage circuit, a coil or wire with a lead bead on it is resonating at a high frequency. You can fix this by removing the back and locating the sound with a homemade stethoscope. I use a paper tube from an empty roll of paper towels against my ear and move it around trying to hone in on the sound. Once it is located, you can spray the component with some conformal-coat or some type of shellac finish to seal it from vibrating anymore. Only do this with the set unplugged and wait for it to dry before plugging back in. If you find the sound to be internal to the picture tube, you're SOL.
Why do older TV's make a steady high pitched sound?
That’s an interesting question.Cathode ray tube televisions do indeed emit sound with a frequency of around 15kHz.The physical reason for this is that they contain a transformer handling alternating current of that frequency, and exhibit a phenomenon called magnetostriction whereby components of the transformer vibrate, producing audible sound.It would be possible to install sound-deadening materials to attenuate the sound, but it wasn’t done, probably because only children and young adults can hear sounds of that high a frequency, and televisions were designed and tested by old men who didn’t hear the sound.I know this because I (aged 8) asked my father when we first acquired a family TV in about 1955 why it made such an annoying sound. Fortunately he worked for an electronics company and was able to answer the question.
Why do I hear a high pitched buzzing/ringing in my room? It isn't just my ears.?
Sometimes when I'm in my room I hear a high pitched buzzing/ringing sound. The sound isn't just in my head because when I turn my head and move around the room, the sound still seems to be coming from the same place, my TV. The sound seems to be there sometimes even when the TV is off too. My TV is fairly old. What could be causing this noise? I wasn't sure where to put this question, but since it may have something to do with something in my TV, I put it here.
High pitched noise coming from gas fireplace?
Just a few days ago I started hearing a very high pitched sound coming from my gas fireplace. Not everyone can hear it, only my younger sister and I. I heard it just a few minutes ago too but I turned the fan in the fireplace off and it stopped. Maybe it's the fan? But I don't understand how such a high pitched noise could be coming from the fan...
What could this noise be? Subtle, high pitched/like ears ringing coming from only one room in the house.?
Wow, that's a doozy. I would start by turning off the breaker for the room...that can tell you if it is something in the wiring. Also, if there are any gas pipes or some other pressurized system piping behind any of his walls, a pinhole leak might sound like that. This may sound odd, but it's possible that the small transformer that powers your doorbell might be inside one of his walls...so kill the power to that too, since transformers have been known to make various noises (even when operating normally). If there is a crawlspace above or below the room, be sure to go check them out. It may be helpful to get an inexpensive stethoscope and try to isolate the source to a specific area or device that way. I hope this helps, I'm sure your son would like to have his room back! **UPDATE: There is one more thing that is probably in his room and is designed to make noise...although it would normally be a lot louder. Go check the smoke detector! They are supposed to beep if the battery is getting weak, but it might still be the source of your mystery noise.
Why do a lot of old CRT TV's make a very high pitched buzzing noise (and how could you "fix" it?)
There is a “high voltage putty” specifically made to address this issue. As previously mentioned, it’s the flyback which often is just enameled wire wrapped around the yoke of the CRT (the narrowing section of the back of the tube). CAUTION if you are not experienced on working on these devices there are potentially lethal voltages present in this area. You can unplug the set for a week and it might still have some zap on it. The high voltage capacitor can be drained by a competent technician it is not difficult but must be done safely. Anyway, the putty (mine was a translucent white) can be kneaded to soften and then squeezed around the loops of wire to dampen vibration. If you can only find an old package of this, no worries, it does not seem to dry out.It will also work around the transformer. Again, find a way to discharge the high voltage supply, which can be tens of thousands of volts. I’m sure there are instructional videos on line.