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A distributed adaptive wave field synthesis system
Tianyou Li1, Sipei Zhao2, Yang Huang1
1Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China.
The Journal of the Acoustical Society of America
|March 27, 2025
Summary
A new distributed adaptive wave field synthesis (DAWFS) system improves sound reproduction in reverberant spaces. This system reduces computational load compared to traditional methods, making it suitable for large-scale applications.
Area of Science:
- Acoustics
- Signal Processing
- Computational Auditory Scene Analysis
Background:
- Conventional wave field synthesis (WFS) performs poorly in reverberant environments due to free-field assumptions.
- Adaptive WFS (AWFS) uses error microphones but faces computational burdens with centralized control.
Purpose of the Study:
- To propose a distributed AWFS (DAWFS) system for improved performance in reverberant environments.
- To reduce the computational complexity of AWFS systems for scalable applications.
Main Methods:
- Implemented a distributed signal processing strategy for the DAWFS system.
- Utilized an acoustic sensor and actuator network.
- Conducted simulations in a rectangular room environment.
Main Results:
- DAWFS achieved comparable sound reproduction performance to AWFS in near-field and target areas.
- DAWFS demonstrated significantly lower computational complexity, especially for massive channel systems.
- Simulation results confirmed DAWFS's applicability in realistic reverberant conditions.
Conclusions:
- The proposed DAWFS system effectively addresses the limitations of centralized AWFS in reverberant spaces.
- DAWFS offers a computationally efficient and scalable solution for advanced sound field control.
