CAJ | 학술논문

目的设计耳声导抗校准算法,以减少由于耳机及器件等非线性引起的误差.方法采用数字化检测系统设计,对不同容积校准腔(0.5、2.0、5.0 ml)进行检测,根据校准腔的数值对耳声导抗信号进行数字校准算法处理,生成校准数据表,通过输入耳声导抗值可查表进行线性校准.结果在低频探测音测量时,鼓室图功能测量结果准确,对不同容积校准腔进行测量,误差均≤1％.结论耳声导抗校准算法提高了系统检测精度,可为临床诊断提供可靠依据.
목적 설계이성도항교준산법,이감소유우이궤급기건등비선성인기적오차.방법 채용수자화검측계통설계,대불동용적교준강(0.5、2.0、5.0 ml)진행검측,근거교준강적수치대이성도항신호진행수자교준산법처리,생성교준수거표,통과수입이성도항치가사표진행선성교준.결과 재저빈탐측음측량시,고실도공능측량결과준학,대불동용적교준강진행측량,오차균≤1％.결론 이성도항교준산법제고료계통검측정도,가위림상진단제공가고의거.
Objective To reduce the error caused by the non-linearity of headphone and device via the design of calibration algorithm for acoustic immittance.Methods Values of calibration chambers with different volumes (0.5,2.0 and 5.0 ml) were measured using the digital detection system.Then,the calibration data tables,for linearity calibration with inputting the values of acoustic immittance,were produced by means of processing the signal of acoustic immittance using the digital calibration algorithm based on the values from the calibration chambers,Results With the low frequency probe tone measurement,it was confirmed that the range of error among various calibration chambers with different volumes was 1％.Conclusion The calibration algorithm enables the improving of the detection accuracy and provides the reliable data for further clinical application.