决策融合策略在嵌入式智能听力筛查仪中的应用

Application of Decision Fusion Strategy in Design of Embedded Intelligent Hearing Screening Instrument

在耳声发射的测试过程中,其耳声发射信号判别时的实时性和准确率一直是OAEs测试研究中的重要课题,对于实时性要求较高的嵌入式测试系统更是如此.本文对OAEs信号判别算法进行了研究,引入融合策略将奇偶相关系数判别法和3db判别法结合进行综合处理,最终得出检测决策,并在嵌入式智能听力筛查系统中综合运用了这种方法,极大提高了信号判别的实时性和准确率.

During the test of otoacoustic emission, the judgement of the real-time and accuracy of the otoacoustic emission signal has been an important issue in OAEs test research, which is more important in the embedded test system with high real-time request. In this paper, the algorithm for OAEs signal discrimination is researched and fusion strategy is put to use for integrating the parity correlation coefficient discriminant method with 3db discriminant method before eventually getting detection decisions. This technique is applied in the embedded intelligent system for hearing screen and the real-time and accuracy of signal discrimination are improved remarkably.