Study on multi-channel speakers for controlling sound field of flat panel display

• Published in: The Journal of the Acoustical Society of America 2018-03, Vol.143 (3), p.1837-1838
• Main Authors: Lee, SungTae, Park, Hyung Woo, Bae, Myungjin, Park, Kwanho
• Format: Article
• Language: English
• ISSN: 0001-4966; 1520-8524
• DOI: 10.1121/1.5036033

Technological improvement in display industry, the organic light-emitting diode(OLED) panel manufacturer changed the quality of picture of the screen from simple high definition to an augmented-reality or a virtual-reality. And OLED that construct with the actual pixels and emit light by themselves are becoming widespread, making the thickness thinner and the bezel thinner or even disappearing. However, these technology improvement made it difficult to achieve sufficient performance in a small space for sound quality, which is less important component of TV. In this study, we have developed a multi-channel flat panel speaker which is able to synthesis the sound field. That flat panel speaker consist with direct drive actuator and diaphragm as an outer—glass layer of OLED. This direct drive actuator speakers are used to realize multi-channel sound from a single OLED panel. Multi-channel speakers can control the sound field to set the direction of sound. This feature is a good condition for implementing mixed-reality. In previous research, it was confirmed that the viewer 's sense of reality increased when the position of sight and hearing were matched. Furthermore, we have been developed to increase the mixed reality, to improve the acoustic performance by adding directionality to the sound generated by the panel.