Sound has how many frequency levels and our modern science is capable to use all these frequencies or not?

Question

tell all the mhz's/bandwidth capacities of these frequencies.

Answer 1

The frequencies of sound occur in a continuous range rather than in distinct "levels."

Vibrations in the range 20 Hz through 100,000 Hz are generally considered to be sound. The human ear can detect sound vibrations between 20 Hz and about 20,000 Hz at age twenty, and the sensitivity of the ear declines with age at the higher frequencies.

There are exception in the human ear both higher and lower. Other animals can hear higher frequencies than we can hear. Bats, birds, and dogs are noted for high frequency hearing.

Sound above about 35,000 Hz is considered "ultrasonic," and these vibrations have many practical uses.

A number of the other answers posted to this question reflect considerable confusion and lack of knowledge. The best way to be sure is to do your own research. You will learn a lot that way.

Answer 2

I think you are a little confused about frequency. Don't think of a TV tuner, think of a radio tuner. Frequency levels are continuous, you can't count them any more than you can count the real numbers (well, not strictly true because of energy quanta, but for all practical purposes true). So the question is more how much bandwidth is needed for an application.

This is answered in communications theory, which among other things studies how much information can be put in different frequencies. Pretty much all frequencies are recognized, from ultrasound (high frequency), whic moves in straight lines like light, to ultra-low frequency sound.

Answer 3

Yes, we can detect all frequencies and all wavelengths from calculations, even the speed in which the sound travels... The sound may be high or low frequency, or high or low wavelength, but everything is able to be heard with the right equipment. But sound is not a constant thing like light... It fades until its frequency, wavelength and speed are gone, or have been faded by other forces such as wind.

Answer 4

"Sound" is defined as pressure waves that are audible to the ear. Thus what is considered sound depends on the capability of the ear doing the listening. Animals can hear "sounds" which humans cannot, and humans differ widely in their abilty to hear different frequencies. In general, "sound" is considered pressure waves in a medium between the frequecies of 20Hz and 20,000Hz. The medium is usually air, but it doesn't have to be. We can hear sounds transmitted by metal rods pressed against a bone near the ear. Pressure waves themselves can exist over a much wider frequency range, but if they cannot be heard, they cannot be called sound. However, the term is often generalized to mean any type of mechanical vibration, even those that are not audible, hence "ultrasound" imagery.

Answer 5

MHz is not the only frequencies. There are UF's , UHF, 10 meter, 20 meter, 40 meter, and many, many others. A good book for you to get is called, "Now you're talking". Its about HAM radio. This should answer many of your questions.

Answer 6

I don't know the details, but for the past 7 years or so there has been a use of ultrasound technology by the corrupt mental health industry.

The energy can pass through walls undetected and be focused at individual victims.

In America they use to lynch people the old fashioned way with a rope, now it is advanced technology, most likely beamed from cell phone and other communication towers. (Like the great Eye that never sleeps, its sorcery, the kind fortold in the Bible, and worthy of the lake of fire judgment).

Answer 7

We cannot here sound of all frequencies with our bare ears.
We can here sould of allmost all frequencies using machines

Answer 8

It will take many more years to detect the voices of yester years