Re: Sudden frequency-like ringing in ears
Quote from Bedower...
...it was still an interesting 'assessment', nonetheless, especially for me when it hit the 6-7 kHz frequency. And it did give me some idea of frequency sounds, which I hadn't known before. Not a total waste of time, osit, but your professional input is much appreciated. Have you yourself noticed how and in what way sound frequencies can affect human behaviour? It would be interesting if you would share your own observations, or if you have any theory about the cause of ear-ringing, other than 4D monitoring?
Being able to isolate and listen to different frequency bands is indeed an excellent way to learn to hear them. The human auditory range is from approx 20 Hz (Hertz is wave cycles per second) at the low end to 20 kHz (kilo-Hertz is times a thousand) at the high end. That translates into 20 vibrations per second up to twenty thousand vibrations per second. As evidenced by the individual reports on this thread, each person's actual hearing range is a little different, depending on age, hearing damage and many other factors. Some people do seem to be able to hear extremely high-pitched sound. But at the top end we are talking about only a few kHz difference between average and exceptional hearing. So if it is an audible tone, it lies somewhere in this range, roughly 20 Hz - 20 kHz. At the upper end, sound disappears into thin and sparkly high. At the lower end, we start to feel the waves in our bodies. If you've ever been to a rock concert and gotten near the speaker array, you have felt the low frequency and know what I mean.
The human ear is a magnificent little amplifier. As far as I know there are only 2 types of sources that input information to the physical ear. Vibrations from outside the ear, and vibrations from physiological processes taking place within the body. I do not know a great deal about the latter, but I do know there are some major blood vessels near the inner ear and that blood-pressure fluctuations can produce audible tones. Tinnitus can manifest in different ways with different people and can be due to different kinds of damage. There can also be hearing loss or damage which has an effect only in a certain portion of the audio spectrum. Different medications can also effect hearing, for instance too much aspirin can make your ears ring.
With those vibrations coming from outside the body, there are a few properties of sound waves which can definitely produce tones, ringing and strange artifacts in our hearing range. Since sound is vibration, it travels to our ears in waves. There can be, and usually are all sorts of different frequencies in the sound waves which reach our ears- all mixed together. The waves bounce around environments depending on the properties of the things in that environment. All the different wavelengths bouncing around in different environments create many possibilities for sounds. If you clap your hands in a bare cement room, the sound will be very 'bright' meaning the higher frequencies will be loud. This is because the shorter wave-length higher frequencies are all being reflected back to us and keep bouncing around. Do the same in a room padded with thick carpets and the sound will be softer and more 'dead' sounding, because the higher frequency parts of the soundwave we produced by clapping get absorbed by the carpet and do not bounce back to us.
If you drop a stone into a calm pool of water the waves move out from the source in a ring and it is easy to tell the waves apart. But once the waves reach the edge of the pool, they begin returning back upon themselves. After a few sets of waves have gotten going, the wave patten becomes much more complex as each new set interacts in new ways with the edge and more and more waves. Sound vibrations do the same thing. And since soundwaves contain many different frequencies of sound vibration, all with variations in wavelength and strength, different situations can produce certain types of interactions amongst the waves which we hear. Sometimes interesting audible phenomena result. The ones which to my mind would be capable of producing ringing or high-pitched tones would be harmonics or resonance.
A basic description of harmonics
(from _http://library.thinkquest.org/C005705/English/sound/sound5.htm):
"The frequencies at which standing waves can exist in a given rope with each end fixed are the natural frequencies or resonant frequencies of that rope. A rope, a spring and even the air in an air column have many natural frequencies, which are often labeled harmonics.
The first harmonic is the simplest mode of vibration and accounts for the fundamental tone. In a rope this means that the rope moves in only one segment, like a jump rope. Overtones are the modes of vibrations that a string, in this case, vibrates in more than one segment. The second harmonic produces the first overtone. The third harmonic produces the second overtone, and so on. In a rope with both ends tied there are only certain ways that this can occur, the frequencies of the overtones are whole number multiples of the fundamental frequency. Almost all vibrating objects produce overtones, which combine with the fundamental. One reason that tuning forks are so important to the study of sound is that their overtones vanish quickly, leaving only the fundamental.
The appearance of a wave, its waveform, is determined by the number and relative intensity levels of the harmonics in its vibration. The quality of the sound, important to music and other things, is a function of its overtones..."
A basic description of resonance
(from _http://library.thinkquest.org/C005705/English/sound/sound6.htm)
"A driving force in tune with the natural frequency (sometimes known as the resonant frequency) of an oscillator can buildup larger amplitudes than the oscillator could alone. This buildup is known as resonance or sympathetic vibration. Imagine swinging on a swing. If someone pushes you at the right time, the amplitude of your swing increases. The pushing has to be at the correct frequency, however. If someone pushes you at random intervals, the chances are it will not cause you to swing very much higher, but if the pushing is in tune with your natural frequency, you can go very high indeed. This principle applies to more than swings.
Put two tuning forks of equal frequencies side by side, but not touching. Strike one tuning fork so that you can hear its tone, and then suddenly silence it. You can still hear a faint tone. This is because the second tuning fork has started vibrating sympathetically..."
There is a dizzying array of potential soundwave sources all around most of us which have the potential of combining as mentioned above. Traffic, airplanes, ships, computers, tv, appliances, people talking, music, electronic equipment of all sorts, etc. In order for the ringing to be perceived by the auditory system, though, the end result has to lie within the audible range. We cannot hear vibrations measured in mHz (mega Hertz= millions of cycles per second) or GHz (billions of cycles per second). We cannot hear cell-phone or television transmission, wi-fi, microwave or the like. Having said that, however, I do take note that we are currently surrounded by more wave-generating equipment than ever before on a grand scale and I think it is at least theoretically possible that there could be sub-harmonics or resonances in certain combinations which might result in an audible tone. There may be others here who know more about that.
I am not qualified to talk about the behavioral relationship to certain sound frequencies. Like you, I am concerned and alarmed at the possibility of manipulation through covert technology like HAARP and subliminal means. I have only just begun researching this though.
