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Sound field control with a circular double-layer array of loudspeakers
1Acoustic Technology, Department of Electrical Engineering, Technical University of Denmark, Building 352, DK-2800 Kongens Lyngby, Denmark. chang.jiho@gmail.com
The Journal of the Acoustical Society of America
|June 21, 2012
Summary
This study introduces a double-layer loudspeaker array for creating controlled sound fields. The best method balances acoustic contrast and pressure matching for precise sound control without external disturbance.
Area of Science:
- Acoustics
- Signal Processing
- Loudspeaker Array Technology
Background:
- Controlling sound fields precisely is crucial for immersive audio experiences.
- Existing methods often struggle to isolate sound within a specific zone without affecting the surroundings.
Purpose of the Study:
- To develop a method for generating a controlled sound field within a circular loudspeaker array.
- To minimize sound disturbance for individuals outside the listening zone.
Main Methods:
- Utilized a double-layer loudspeaker array configuration.
- Examined several solution methods via computer simulations.
- Evaluated performance using acoustic contrast and sound field deviation metrics.
Main Results:
- Demonstrated the effectiveness of the double-layer array in sound field control.
- Identified specific methods that optimize performance based on defined indices.
- Quantified the trade-offs between different sound field generation techniques.
Conclusions:
- A combined approach of contrast maximization and pressure matching offers the best performance compromise.
- The proposed method effectively generates controlled sound fields while minimizing external sound leakage.
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