| 双通道互谱声强测量时不同步采样造成的测量误差及修正方法 |
| |
| 引用本文： | 陈剑,李登啸. 双通道互谱声强测量时不同步采样造成的测量误差及修正方法[J]. 合肥工业大学学报(自然科学版), 1994, 0(4) |
| |
| 作者姓名： | 陈剑 李登啸 |
| |
| 作者单位： | 合肥工业大学 |
| |
| 摘 要： | 本文讨论了双通道互谱声强测量时两通道不同步采样造成的相位失配误差；导出了由此而引起的声强测量误差；推导了声强测量时测量系统的误差特征函数，并给出了使用误差特征函数修正该测量误差的方法．实验结果表明，在两通道间不同步采样时，所产生的声强测量误差可以用误差修正的方法加以消除．修正后声强测量结果的精度令人十分满意．
|
| 关 键 词： | 声强测量；不同步采样；误差修正 |
AN EFFECTIVE METHOD TO ELIMINATE THE ERROR OF THE TEST SYSTEM IN CROSS-SPECTRAL SOUND INTENSITY MEASUREMENT |
| |
| Chen Jian, Li Dengxiao. AN EFFECTIVE METHOD TO ELIMINATE THE ERROR OF THE TEST SYSTEM IN CROSS-SPECTRAL SOUND INTENSITY MEASUREMENT[J]. Journal of Hefei University of Technology(Natural Science), 1994, 0(4) |
| |
| Authors: | Chen Jian Li Dengxiao |
| |
| Affiliation: | Chen Jian; Li Dengxiao |
| |
| Abstract: | This papwr deals with error of phase mismatch by asynchronous sampling of ADC hardware in two microphone cross-spectral sound intensity measurement.The signature function of test system error is derived to eliminate the influence of test system error on the measured data.The experiments show that the method is very effective. |
| |
| Keywords: | sound intensity asynchronous sampling measured error |
| 本文献已被 CNKI 等数据库收录！ |
