zero cross的例句大全

The migrated image at ( x, z) is defined as the zero-lag cross correlation coefficient of the time histories of S and Mat ( x, z).

在（x，z）处的偏移图像可以用（x，z）处的时间函数M和S的零延迟互相关系数来定义。

In this paper, multi-parameters ( short-time energy, short-time zero-crossing rate and autocorrelation function values) combination has been adopted to judge the unvoiced/ voiced of speech signal. Then circular average magnitude difference function has been used to calculate pitch.

采用基于多参数组合方法（短时能量、短时过零率、自相关函数值）进行语音信号清浊音判别，利用循环平均幅度差函数进行基音周期计算。

AC control is a normal application for triacs and SCRs because the turnoff time is decreased when the device is switched off during a zero-crossing.

由于器件在过零时被关断会降低关断时间，所以双向晶闸管和SCR通常用于交流控制。

Using electron switch by BTA, BTA at touch off cross zero, thus deferent electron sine wave is intact.

用双向晶闸管作为电子开关，双向晶闸管过零触发，因而输出的是完整的正弦波。

However, a comparative study of share from the perspective of cross-cultural is less involved; especially the sharing behavior of different ethnic and cultural backgrounds is almost zero.

但是，从跨文化的角度对分享进行比较研究较少涉及，特别是不同民族文化背景下的分享行为研究几乎为零。

Research on Method of Iris Recognition Based on Zero-Crossing Detection

基于过零点检测的虹膜识别算法研究

Intelligent zero-cross-switching shunt capacitor compensation system in electrified railway traction substation

牵引变电所智能过零投切补偿系统的研究与开发

To overcome the false result with piecewise constant regions produced by the binary zero-crossing decision process, a hyperbolic tangent function is used to substitute the symbol function, governing softly the varieties of gray levels of pixels beside the zero-crossing of edges.

为了克服二值的零交叉决策过程导致的虚假的分片常数图像，利用双曲正切函数代替符号函数，柔和地控制边缘的零交叉点两侧像素的灰度值变化。

The author introduced a new cross-zero trigger in this article.

介绍了一种新型过零触发器，电路简单、性能优越。

in the other, we use the particular attributes of zero-crossings as constraint in coarse matching, which can improve the matching speed.

另一方面，使用过零点的特有属性作为粗匹配的匹配约束，可以提高匹配速度。

image edge detection using wavelet-transform based on locating zero-crossings

基于过零检测的子波变换图像边缘检测

in addition, line mode and zero-mode voltage wave cross each other at the point of fault which causes the natural frequency "aliasing" .

此外，故障电压行波于非对称短路点发生线模与零模行波相互交叉透射，致使故障电压自然频率“混叠”。

finally, in accordance with the test data, we analysis the doppler log's accuracy of velocity measurement under zero-crossing detector.

最后，根据湖上航行试验数据，分析了多普勒计程仪在应用过零检测法下的测速精度，取得了预期的效果。

selection of dynamic threshold based on zero-crossing detector

基于零交叉检测器的动态阈值选取

a compare between phase shift trigger for thyristor and zero-cross-over trigger method in process of electronic upsetting

电镦过程中可控硅移相触发和过零触发电路的比较

Marr and Poggio have proposed in their theory of visual information processing that zero-crossings are the most important primitives obtained in the visual primary processing.

Marr和Poggio等人从视觉信息加工理论中提出零交叉（Zero-Crossing）是视觉早期加工过程中首先得到的最基本的信息。

a format conversion from a non-return-to-zero ( nrz) signal to return-to-zero ( rz) signal is presented based on four-wave mixing ( fwm) and cross-phase modulation ( xpm) in a silicon optical waveguide.

基于硅光波导的四波混频（FWM）和交叉相位调制（XPM）效应，提出非归零码（NRZ）到归零码（RZ）的光调制格式转换。

Look at the answer 7.810. Can we cross out the zero? Why?

启发学生想:得数7.810末尾的“0”能不能去掉? 为什么能去掉?

Using electron switch touch off cross zero , thus deferent electron sine wave is intact.

用双向晶闸管作为电子开关,双向晶闸管过零触发, 因而输出的是完整的正弦波.

By using zero normalized cross correlation similarity measure feature points, and preliminary matching, using the uniqueness of matching constraint and disparity gradient constraint, remove the wrong match points to precisely match.

通过采用归一化零互相关系数度量特征点的相似性，进行初步的粗匹配，采用视差梯度约束、唯一性约束去除错误的匹配点，达到精确匹配的目的。