Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 18, 2024 - October 20, 2024
In recent years, ultrasonic speakers, which are used as a foundational technology for three-dimensional acoustics, have the advantage of extremely high directivity due to the use of ultrasonic waves as the carrier wave. However, a challenge arises in the form of sound quality degradation due to waveform distortion during demodulation. Therefore, in this study, we conducted a fundamental examination aimed at establishing a design method for high-quality reproduced sound. This was achieved by connecting linear wave acoustic phenomena and fluid phenomena through a partitioned iterative coupling algorithm, thereby reproducing nonlinear acoustic phenomena in large spaces without solving the memory-intensive Westervelt equation required for large-scale analysis using the finite element method.
