Amplitude Matching: Majorization-Minimization Algorithm for Sound Field Control Only with Amplitude Constraint

A sound field control method for synthesizing a desired amplitude distribution inside a target region, amplitude matching, is proposed. In the conventional pressure matching, a desired sound field is set as a pressure distribution including amplitude and phase. In personal audio applications, it is...

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Veröffentlicht in:Proceedings of the ... IEEE International Conference on Acoustics, Speech and Signal Processing (1998) S. 411 - 415
Hauptverfasser: Koyama, Shoichi, Amakasu, Takashi, Ueno, Natsuki, Saruwatari, Hiroshi
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 06.06.2021
Schlagworte:
Acoustics
amplitude matching
Closed-form solutions
Computational efficiency
Conferences
multizone sound field control
personal audio
pressure matching
Signal processing
Signal processing algorithms
Speech processing
ISSN:2379-190X
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Zusammenfassung:A sound field control method for synthesizing a desired amplitude distribution inside a target region, amplitude matching, is proposed. In the conventional pressure matching, a desired sound field is set as a pressure distribution including amplitude and phase. In personal audio applications, it is sometimes not necessary to synthesize a specific phase distribution, but a certain acoustic power level should be controlled inside the target region. Since the optimization problem to achieve amplitude matching becomes nonlinear, there is no closed-form solution and numerical optimization algorithms are generally applied. We derive an efficient algorithm for the amplitude matching based on the majorization-minimization algorithm. Numerical experiments indicated that high control accuracy over the target region can be achieved with low computational cost by using the proposed algorithm.
ISSN:2379-190X
DOI:10.1109/ICASSP39728.2021.9414855