The most common such devices are the seismographs and Hydraphones.
an ultrasound
Sound -is- vibration. A 'body' totally motionless makes no noise. it is only the movement of the air - which is either moving due to the wind, or because something is passing on vibrations to it, that creates sound. Our hearing can detect the rhythm of a vibrating substance and we interpret that as sound. Some sounds are beyond our range - either above or below the frequency we can detect.
The definition of sound is : "Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear." Sound can be measured by amplitude (loudness) and pitch (The frequency of the vibrations). Therefore sound does not affect frequency but frequency affects the pitch of the sound.
Ultrasound. Diagnostic ultrasound is the use of high-frequency sound waves to image anatomic structures and to detect the cause of illness and disease. Ultrasound moves at different speeds through the body's tissue, depending on the density of the tissue.
It is independent of frequency.
frequency
I'm trying to report a infra sound home invasion and an v chip implanted and c ant get my message
Infrasound has a frequency below normal hearing. Ultrasound waves have a frequency above the normal range of human hearing.
receiver capsule is a telephone device who can detect sound wave
Infrasound is always smaller or lighter than ultrasound. For example: infrasound can be the sound of a paper clip hitting the floor, and ultrasound can be the sound of two planets colliding.
Infra sonic, ultra sonic and sonic waves of sound Infra sonic has frequecy less than 20 Hz Ultra sonic has frequency more than 20,000 Hz Sonic waves having frequency range 20 - 20000 Hz
an ultrasound
The sensation of a frequency is commonly referred to as the pitch of a sound. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave.The ability of humans to perceive pitch is associated with the frequency of the sound wave that impinges upon the ear. Because sound waves traveling through air are longitudinal waves that produce high- and low-pressure disturbances of the particles of the air at a given frequency, the ear has an ability to detect such frequencies and associate them with the pitch of the sound.
Sound -is- vibration. A 'body' totally motionless makes no noise. it is only the movement of the air - which is either moving due to the wind, or because something is passing on vibrations to it, that creates sound. Our hearing can detect the rhythm of a vibrating substance and we interpret that as sound. Some sounds are beyond our range - either above or below the frequency we can detect.
Infrasonic sound below the range of human hearing at 20 cycles per second, can include severe weather, surf, avalanches, earthquakes, volcanoes, waterfalls, calving of icebergs, meteors, and thunder. You can often 'feel' infrasound, especially in your chest.
Cuse of the manner in which sound (and, in particular, low frequency sound) is propagated unnder water, whalies, dolphins and the like as well as fieesh will be able to detect them, though it may not be "heering" as we no it. and eliphants and lions
The human ear can detect sound waves, but it has limited range and sensitivity. Some might chose to use a microphone and an associated electronics package to detect sound. Sound that is too soft to be detected or at too high or low a frequency to be heard might be looked at on a screen where the sound picked up by the microphone is amplified and converted to a picture that is displayed to provide a visual representation of the sound.