can low frequency change to high frequency( 30KHz)?

Answer 1

for sure yes.you can use some easy logical circuits to do that

Answer 2

Frequencies have what's called harmonics, so it may be easy to pick up a 30KHz signal at 15 or 60 KHz, 10 or 90 KHz, etc. Also if a 30 KHz signal bumps into a 20 KHz signal you will get the sum and difference like 50 KHz and 10 KHz.

Answer 3

"low frequency" is not an object, it is a descritpion. Therefore is cannot change into anything...

You're asking me if red can become blue... NO! Red is red. Blue is blue.

A low frequency SIGNAL can change to high frequency, though... Through Dopler effect, for example. But there is always a trick or something that "makes" the signal change

Answer 4

Modulate the low frequency to the higher frequency.

Answer 5

Low frequency signal can be.
By Dropler Effect.
In mathematical terms using the formula
N=120*f/p.where f=frequency,N=RPM,p=pair of magnetic poles.

Answer 6

not without some form of external stimulation. or unless you consider the doppler effect. rapid movement towards an emitted low frequency will create the effect that the frequency is higher than it actually is.

Answer 7

Is that in sound or radio waves. there is a thing called Doppler shift which changes the freq. . For instance a satellite coming toward u will appear to be higher in freq. than actual . To determine the true freq of a satellite they read the Doppler shift and it will represent the true freq. at closest approach.