This document discusses two projects exploring new musical interfaces using iPad and gesture-based technologies. The first examines an ensemble that incorporates iPad-based instruments into free improvisation percussion performances. The apps emphasize rhythmic playing and structuring improvisations. The second project, called the BoomRoom, allows direct manipulation of virtual sound sources in mid-air using wave field synthesis and optical tracking for a new interactive musical experience.

1. Exploring Percussive
Gesture on iPads with
Ensemble
Metatone
Research School of Computer Science, CECS
Australian National University
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2. INTRODUCTION
• This paper examines Ensemble Metatone, a group formed to
explore the infiltration of iPad-based musical instruments
into a free-improvisation percussion ensemble.
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3. DEMO
The green circle denotes
the user’s touch point .
red circles show
delayed notes.
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4. User Reviews&DEMO
• Simple operation
• emphasizes rhythmic playing
• Structuring an Improvisation
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5. The BoomRoom:
Mid-air Direct Interaction
with Virtual Sound Sources
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6. INTRODUCTION
• The BoomRoom allows for direct manipulation of virtual sound
sources hovering in mid-air.
• Wave Field Synthesis(WFS)&optical tracking.
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7. 7

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9. INTRODUCTION
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10. OPERATION
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11. OPERATION
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12. OPERATION
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13. OPERATION
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14. OPERATION
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15. OPERATION
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16. Thank you for listening
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