Acoustics of the Cajon

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Acoustics of the Cajon
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Content

• History
• Acoustic System of the Cajon Overview
• Plate
• Helmholtz Resonator
• Other Resonators
• Equipment

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History

• Origin in Peru
• The first instruments were shipping boxes
• Cajon is the Spanish word for box
• Adopted by Cuban flamenco percussionists

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Acoustic System - Overview
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Plates Modes of vibration 1
(0,1) Mode
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Plates Modes of vibration 2
(1,0) Mode
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Helmholtz-Resonator
C Speed of waves in airr Radius of the holeV
Volume of the body
Dominant frequency 160 Hz
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Other Helmholtz Resonators

• Exhaust system
• Loudspeaker
• Body of other musical instruments

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Equipment

• Acoustic Camera
• ? 33 microphones make sound visible
• Software ? NoiseImage
• Equipment can be seen at FH-Regensburg?
  Mechanical Engineering

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• Thank you for your attention!