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D. W. Kim, H. S. Kim, D. H. Lee, et al., “Importance of Skin Resistance in the Reverse Iontophresis-Based Non-Invasive Glucose Monitoring System,” Proceedings of the 26th annual international Conference of the IEEE Engineering in Medicine and Biology Society, Vol. 4, 2004, pp. 2434-2437.

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• TITLE: Development of Digital-Controlled Measuring Instrument for Hearing

  AUTHORS: Longcong Chen, Gaiqin Liu, Bin Gao, Ping Chen, Xingliang Xiong

  KEYWORDS: STC11F16EX; Digital-Controlled; Hearing; AD9833

  JOURNAL NAME: Journal of Signal and Information Processing, Vol.3 No.4, November 29, 2012

  ABSTRACT: A digital-controlled measuring instrument for hearing, which is mainly composed of STC11F16EX, AD9833, ISD400416MS and LM1972, is introduced in this paper. It may output highly accurate and purified sine signal whose frequency and amplitude are controlled by digital data. Specially, the displaying number of decibel is equal to actual number of decibel because that frequency response of earphone is corrected through software of microcontroller. Additionally, touching buttons, which is simple and convenience to use, is selected. Hence this instrument is convenient to measure and teach about hearing specially, research and study on frequency characteristic of human ear and impedance characteristic of human body in medical science.