Acoustics of the Cajon - PowerPoint PPT Presentation

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  1. Acoustics of the Cajon Markus Schneider - FH-Regensburg

  2. Content • History • Acoustic System of the Cajon – Overview • Plate • Helmholtz Resonator • Other Resonators • Equipment

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

  4. Acoustic System - Overview

  5. Plates – Modes of vibration 1 (0,1) Mode

  6. Plates – Modes of vibration 2 (1,0) Mode

  7. Helmholtz-Resonator C: Speed of waves in airr: Radius of the holeV: Volume of the body Dominant frequency : 160 Hz

  8. Other Helmholtz Resonators • Exhaust system • Loudspeaker • Body of other musical instruments

  9. Equipment • Acoustic Camera  33 microphones “make sound visible” • Software  NoiseImage • Equipment can be seen at FH-Regensburg Mechanical Engineering

  10. Thank you for your attention! Markus Schneider - Acoustics of the Cajon