String Systems in Musical Instruments

CSEF · 2008 Physics & Astronomy

Overview

Objectives/Goals To generate unique sounds with string systems, and to analyze their wave form and spectrum graphs Methods/Materials Using an old guitar, guitar string, wood, and tuning keys, I created an instrument capable of accomodating different string systems. (to clarify about the string systems, a normal guitar string is attached at 2 endpoints. a different string system would be to have the guitar string branch off into 3 or more endpoints). I recorded audio samples of each string system (2,3,4,& 5 endpoints) and analyzed the results with sound editing software. Results The sound waves of the normal guitar string had a very distinct wave form pattern. Its sound was very bright. The more endpoints you added onto the string created a more muted sound, causing making it sound similar to that of a drum. With the more endpoints, the wave form pattern's amplitude died down much more quickly than the string with 2 endpoints. Conclusions/Discussion My data showed that as you add more endpoints onto the guitar string, the more muted the sound of the guitar would be. Aside from that, the sound died down significantly quicker than the normal guitar string. Overtones were also produced, creating a sound similar to that of a drum. Using the sounds generated by the different string systems, it is definitely possible to influence culture, as well as to impact music therapy.

Summary statement

My project analyzes the differences in sound waves of different string systems (instrument strings with 2 or more endpoints).

Help received

I received help in modifying the guitar so as not to completely damage the instrument and make it unfunctional for my uses.

Competition history

  • CSEF 2008 Physics & Astronomy · Entry J1612

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