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1)  between-zone variance
带间方差
2)  variance of frequency band
频带方差
1.
First of all,a kind of voice activity detection(VAD)algorithm based on variance of frequency band is introduced by colored additive noise.
首先介绍一种基于频带方差的语音活动检测(VAD)算法,然后在此基础上,给出一种对麦克风阵列各通道信号同时进行VAD的新算法(ICA-VAD):经ICA分离出的相对纯净的语音信号作为参考信号,其VAD结果用于指导阵列信号的语音检测。
3)  sub-band variance
子带方差
1.
Due to the decorrelation and frequency-band partition of DWT for long memory process (LMP), a physical quantity called sub-band variance was proposed, and its approximating expression was given under the fractionally differenced (FD) parameters or spectral density is specified.
根据长记忆过程小波变换的频带分割及其去相关性,提出了“子带方差”的概念,并给出了在长记忆条件下的估算公式。
4)  classes square error
类间方差
1.
This paper discusses the basic principles,operations and features of genetic algorithms,and takes the method of maximum classes square error as an example to describe the method and procedure about applying genetic algorithms in optimizing the selection of image threshold.
论述了遗传算法的基本原理、操作和特点,并以图像阈值选取中的最大类间方差法为例,给出用遗传算法优化图像阈值选取的步骤和方法,实验结果表明了这一方法的有效性。
5)  class variance
类间方差
1.
In the paper,firstly,using the classification theory in pattern recognition,approach of multithreshold stone image segmentation based on improved 2D class variance is presented.
文章从模式识别的分类理论出发,提出了改进的二维类间方差的多门限阈值石块分割方法。
6)  variance between laboratories
室间方差
补充资料:泛频带
分子式:
CAS号:

性质:又称倍频谱带。红外光谱分析中的一种谱带;指某个吸收频率为基谐振动频率的2倍或3倍时的吸收带。它的产生是由于两个原子核间的库仑排斥力使振动频率发生了异常变化的结果。泛频带的吸收强度往往很低,因此这个吸收带有时测不出来。

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