As humans, we regularly take our abilities to interpret and interact with the world around for granted. An adult human has been using his body to sense and feel the world around him longer than he can keep in mind. Our bodies react to the world around us automatically, but it can be refreshing to step back and take at look at how our senses work. of the most mysterious things that our bodies sense is sound. A device which detects sound impact is the PIND testing or Particle Impact Noide Detection. It calculates the sound based on particles hitting the surface. Sound lets us communicate with each other, provides our bodies with important knowledge about its surroundings, and even invokes emotion through music. PIND effectively calculates the total noise produced.
PIND is a non-invasive testing and can detect faint vibrations. There are a number of internal devices that pick the vibrations. It has become a widely accepted way to detect noise. If you have ever stood near a large sound process or put your finger up to the speaker cone of a little, you would not be surprised to find that sound has to do with vibration. All sounds are created by the vibrations of an object, or sound source. Anything can vibrate to generate sound. billiard balls cause a vibration as they hit together, for example. The force of the impact of ball against another causes them both to vibrate quickly for a short amount of time, which in turn causes the air around them to vibrate.
The air is a much different substance than a solid, and an fascinating thing begins to happen as air vibrates. The vibrations push and pull against air particles to form waves that travel away from the source. As a sound moves through the air the vibrations become weaker, like a ball finally slows to a cease when thrown. If a sound reaches the ear before it dissipates entirely, delicate parts inside the ear absorb the vibration. The brain can tell how loud the sound is by how much the ear is vibrating. Ears are sensitive, however, and can be damaged by intense vibrations. People exposed to loud sounds regularly have damaged ear with no hearing capabilities. The PIND system performs series of shocks and vibrations test. It is highly sensitive and can even detect the vibrations caused by 1 ml goldwire bonds. The device has made high-precision testing a reality.