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Instrument Acoustics- The Problem Instrument Acoustics -  Research Instrument Acoustics - Solutions Instrument Acoustics - Practical Designs Instrument Acoustics - How it Worked Instrument Acoustics - Evaluation

Building an Instrument (Part 4)

Practical Design

I decided to make a wooden frame similar to the one, which the glockenspiel was based on. This consisted of two lengths of wood set at converging angles with two cross pieces in between to which they were fastened. See diagram below.

Across this angled frame I would stretch a 12 strings (to enable one octave of a full chromatic scale). For the strings I decided to use fishing line as this is strong and unlikely to break when placed under tension. For the fastenings I decided to use screw in metal eyelets through which I would thread the fishing line and then screw tighter or unscrew to adjust the string tension.

Unlike with the glockenspiel the precise angles of the frame were not too important as the pitches would be fine-tuned using tensioning. 

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