more than 2000hz
Ultra sonic waves are a sound frequency that is oftentimes silent to humans. Research shows there is no long term negative affects due to exposure to these sounds.
Ultra high frequency.
Assuming you mean a super form called Ultra Sonic, No
Correction, Yes there are such beings as Solar Sonic and Ultra Sonic, however, they does not make an Apperance in any of the games, Solar and Ultra Sonic only appeared in the Comics, Ultra Sonic was the Base form Sonic would Assume when he collected a certain Number of Rings (1000 i believe) and he could change his form based on the climate of the Area he is in, Solar Sonic assumes control when Ultra Sonic is in a hot, Arid area, such as a Desert, there is also Eco Sonic for forests and Polar Sonic for Ice caps
Ultra Sonic first appears in Sonic the Hedgehog #'s 65 and 66, with additional appearances in Sonic the Hedgehog #71 and Super Sonic Special # 15.
The frequency of vibrations in music is measured in Hertz (Hz). This unit represents the number of vibrations per second. In music, different pitches are created by varying the frequency of vibrations produced by the sound waves.
Sound waves are classified as mechanical waves because they require a medium, such as air or water, to propagate. They are longitudinal waves, meaning the particles of the medium vibrate parallel to the direction of wave propagation.
A high frequency of vibrations typically produces a high-pitched sound or a form of energy such as ultraviolet light or X-rays, depending on the context in which the vibrations occur. Higher frequency vibrations often carry more energy than lower frequency vibrations.
they change colors
Sonic the Hedgehog - 1993 Ultra Sonic 1-3 was released on: USA: 2 October 1993
The frequency of molecular vibrations describes the number of vibrations that occur in a given period of time, typically measured in hertz (Hz). A higher frequency corresponds to more vibrations per unit of time.
Vibrations a second are measured in Hertz.