CAJ | 학술논문

　　提出了一种基于小波包变换的小麦硬度声学检测方法。利用自制的声学装置采集小麦超声信号，通过小波包变换对信号进行分解，求取各子频带能量，提取能够反映小麦硬度指标的特征参数，通过线性回归分析，建立了特征参数与小麦硬度之间的回归模型。实验结果表明，特征参数与小麦硬度之间的线性相关系数 r2达到了0．9589。
　　제출료일충기우소파포변환적소맥경도성학검측방법。이용자제적성학장치채집소맥초성신호，통과소파포변환대신호진행분해，구취각자빈대능량，제취능구반영소맥경도지표적특정삼수，통과선성회귀분석，건립료특정삼수여소맥경도지간적회귀모형。실험결과표명，특정삼수여소맥경도지간적선성상관계수 r2체도료0．9589。
A new acoustic method based on wavelet packet transform was proposed for the wheat hardness detection .The system collected the ultrasound signal of the wheat and exploded it by using the wavelet packet transform , got the sub-band energy of signal and extracted some characteristic parameters .Through linear regression analysis ,the regression mod-el between wheat hardness and the characteristic parameters was established. The linear correlation coefficientr 2 has reached 0 .9589 .