Amplitude matching is a multizone sound field control method to synthesize desired amplitude (or magnitude) distributions over a target region with multiple loudspeakers. This repository provides codes for reproducing results in the following article.
- T. Abe, S. Koyama, N. Ueno, and H. Saruwatari, "Amplitude Matching for Multizone Sound Field Control," IEEE/ACM Transactions on Audio, Speech, and Language Processing, DOI: 10.1109/TASLP.2022.3231715, 2023.
The article is open access on IEEE Xplore.
A multizone sound field control method, called amplitude matching, is proposed. The objective of amplitude matching is to synthesize a desired amplitude (or magnitude) distribution over a target region with multiple loudspeakers, whereas the phase distribution is arbitrary. Most of the current multizone sound field control methods are intended to synthesize a specific sound field including phase or to control acoustic potential energy inside the target region. In amplitude matching, a specific desired amplitude distribution can be set, ignoring sound propagation directions. Although the optimization problem of amplitude matching does not have a closed-form solution, our proposed algorithm based on the alternating direction method of multipliers (ADMM) allows us to accurately and efficiently synthesize the desired amplitude distribution. We also introduce the differential-norm penalty for a time-domain filter design with a small filter length. The experimental results indicated that the proposed method outperforms current multizone sound field control methods in terms of accuracy of the synthesized amplitude distribution.
Pressure and magnituide distributions synthesized by amplitude matching.
Each jupyter notebook file corresponds to the section of the article. To run the codes for Section VI-C (Sect-VI-C.ipynb), MeshRIR dataset is required. Place irutilities.py and S32-M441_npy in the same directory.
- Takumi Abe
- Shoichi Koyama
- Natsuki Ueno
- Hiroshi Saruwatari