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orthogonal operations
相关语句
  相似匹配句对
     Orthogonal Polynomial
     正交多项式
短句来源
     (3) orthogonal.
     (3)正交。
短句来源
     Joint Operations
     联合进攻——风暴行动
短句来源
     A Direct Way to Differential Operations of Vector in Orthogonal Curvilinear Coordinates
     正交曲线坐标系中矢量微分运算的简捷途径
短句来源
     The effects of different operations on the preparation of activated gangue are studied by orthogonal test.
     用正交试验研究了活性矸制备过程不同操作条件的影响。
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We describe and demonstrate a new interferometric phase compression theory,and apply itto current sensor in high voltage. This theory has been verrfied in experiment. The linear range of theproposed method are many times than that of coventional two - beam interferometers. The otheradvantages of this method are stable orthogonal operation condition and insensitivity to slowly varyingfluctuations such as temperature drift and vibration.

该文研究了一种新颖的光纤相位压缩技术,对其工作原理进行了分析,导出其数学模型,并通过对高压电流传感器的实验,验证理论的正确性,与普通汉光束干涉仪相比较,其线性范围扩大了数十倍,甚至数百倍,且具有稳定的正交工作状态,能自动补偿光纤固有的双折射以及因环境变化产生的干扰等优点。

Two modifications for speaker recognition system in noise environment are described. First, in order to improve the robustness of the system, noisy speech is decomposed into various frequency bands and de-noising is carried out by TEO in every frequency band. The wavelet coefficient is weighted according to the characteristics of speaker recognition, and is then transformed into MFCC. Second, in order to improve recognition performance and training speed, a modified OGMM that orthogonal transform is performed...

Two modifications for speaker recognition system in noise environment are described. First, in order to improve the robustness of the system, noisy speech is decomposed into various frequency bands and de-noising is carried out by TEO in every frequency band. The wavelet coefficient is weighted according to the characteristics of speaker recognition, and is then transformed into MFCC. Second, in order to improve recognition performance and training speed, a modified OGMM that orthogonal transform is performed before EM arithmetic is applied at the recognition stage. Thus, it is not necessary to do orthogonal operation during every EM iterative process. The experimental results show that the parameters proposed have produced good effect and that modified OGMM can further improve recognition performance and training speed.

针对在噪声环境下的说话人识别系统,做了两点改进.第一,为了提高系统的鲁棒性,通过不同尺度的小波基,把含有噪声的信号分解于不同频段中,然后在各个频段分别通过TEO(Teager能量算子)去噪.针对说话人识别的特点,在小波重构时对各小波系数进行了加权处理.再把各个频段的输出通过小波重构恢复信号.最后通过Mel滤波器组把小波系数转换成MFCC.第二,为了进一步提高识别性能和训练速度,在识别阶段采用了改进的OGMM(正交高斯混合模型),即把正交变换改到EM算法之前进行,这样就不必要在EM迭代过程中每次都进行正交运算了.从实验得出,采用本文提出的DWT-TEO参数对于说话人识别的效果较好.采用改进的OGMM进一步提高了识别性能和训练速度.

 
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