Physics Of Percussion

All the time during your life, everyday, somewhere, you will hear some sort of percussion. Whether it is the music on a commercial, the music on the radio, or you might catch yourself tapping on your desk. Percussion however is much more than just drumming, tapping, or banging. Percussion is yet another form of physical science. Using some sort of method of beating a surface, the surface is struck thus causing a vibration. The vibration will cause a sound depending on the timbre of the surface.

There are 3 types of pitches created by percussion instruments: Single Indefinite Pitch, Multiple Indefinite Pitch, and Variable Pitch.

"Single Indefinite Pitch- The majority of percussion instruments are in this category. When these instruments. The story of percussion is vibrations. When a drum is hit, it makes a vibration. This is what makes a sound. To make a louder, or more intense sound, a drummer hits the drum with more force making a larger vibration. This is the basic concept of single indefinite instruments. You strike it and it makes a sound.

This applies to more than just drums, however. Besides drums such as snare drums and base drums, triangles, tambourines, maracas and ot

As any type of physical science, there are equations that can be used for figuring things out. "For xylophones, marimbas, or other instruments using vibrating plates or rods supported in the same way, you would use the equation:

"Multiple Indefinite Pitch- Multiple indefinite instruments are basically the same as single indefinite pitch instruments. They have different components to the instrument with different pitches. Sometimes these are tuned to certain pitches. Most of these are "mallet" instruments such as xylophone, vibraphone, marimba, and glockenspiel. They consist of bars of instruments that emit certain wavelengths, and therefore certain frequencies. The frequency determines the pitch. The instruments are designed to be similar to piano, each bar representing a piano key. The size of the bar determines the frequency and instrument makers shape the size of the bars until the different pitches match a piano's pitch. This makes the harmonies that we can hear.

Other instruments in this category are a bunch Sing Indefinite Pitches compiled together. Multiple toms, a type of drum, make a variety of pitches to produce. Large groups of cymbals also have the same effect. A drum set could be put in this category. This allows for a larger variety of sound." (http://www.kent.wednet.edu/staff/trobinso/physicspages/po2000/jones/)

"Variable

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