TY - JFULL AU - S. Fujiwara and T. Kaburagi and K. Kobayashi and K. Watanabe and Y. Kurihara PY - 2015/9/ TI - Evaluation Using a Bidirectional Microphone as a Pressure Pulse Wave Meter T2 - International Journal of Health and Medical Engineering SP - 805 EP - 811 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10002019 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 104, 2015 N2 - This paper describes a novel sensor device, a pressure pulse wave meter, which uses a bidirectional condenser microphone. The microphone work as a microphone as well as a sensor with high gain over a wide frequency range; they are also highly reliable and economic. Currently aging is becoming a serious social issue in Japan causing increased medical expenses in the country. Hence, it is important for elderly citizens to check health condition at home, and to care the health conditions through daily monitoring. Given this circumstances, we developed a novel pressure pulse wave meter based on a bidirectional condenser microphone: this device is used as a measuring instrument of health conditions. ER -