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As you can see from the sound wave it is higher in pitch mainly due to the main sound coming from metal instead of wood from the Marimba. The amplitude is quieter than the Marimba as each metal key is smaller in proportion to that of the Marimbas wooden keys.

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How does playing technique influence the sound. 

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How does playing technique influence the sound. 

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Playing style such as Dynamics - hitting a  Glockenspiel hard will result in it producing a loud sound whereas hitting it softly will make it produce a softer or quieter sound.

Moreover what you use to hit the instrument will affect the sound for example. Hitting a Marimba with you hands for example will change the dynamics and frequency over hitting it with a mallet which will direct more force and produce a clearer higher sounding note.

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For Idiophones the size and weight of a woodblock for example will change the sound produced when hit as the heavier and bigger the woodblock the lower the note. The lighter and smaller the woodblock the higher the note produced.

Moreover some woodblocks have cavities in them which will make them hollow changing the sound changing the frequency and sound produced.