音标与读法

这里为大家介绍下cross rate 是什么意思，希望能帮助到各位朋友。

中英文翻译

第三国外汇牌价。

cross:n. 克罗斯〔姓氏〕。 rate:vt.,vi. 〔方言〕＝ret.

例句与用法

1.Where u . s . dollars are not used to express an exchange rate , the term " cross rate " is usually used to express the relative values between two currencies

在美元被用来表示汇率的地方,套汇汇率就被用来表示两种货币间的相对价值

2.( 3 ) study the segmentation and recognition of audio frequency signal . audio signal can be divided into segments based on zero - crossing rate . ( 4 ) a audio recognition arithmetic based on mfcc is proposed

音频信号的处理作为项目的一部分,根据要求实现了对单一音频信号的识别,用vc6 . 0来实现。

3.( 2 ) study the character of audio signal . analyze the zero - crossing rate and mfcc . a mean mel coefficients is proposed , it can be used to recognized different audio signal

通过对mfcc系数进行分析,均值mfcc系数作为音频特征,采用动态时间规整识别算法,能够对单一音频进行识别,对已有数据源进行测试,有较高的识别率。

4.In this article , double threshold , iteration is applied to improve segmentation algorithm based on signal energy , and short - time zero - crossing rate is proposed for the first time to determine the exact boundaries between different components of heart sound

本文通过使用双门限、迭代等方法，改进了基于信号能量的分段算法，并首次引入短时过零率以更准确地定位分段边界。

5.This dissertation uses genetic algorithm to choose optimum parameters for the widely used pid controllers . in the optimization calculation process , mutation rate , cross rate and parameter range are adaptively changed to accelerate optimization process

本文用遗传算法优化工程中广泛使用的pid控制器的参数，采用变参数区间、变交叉变异概率等方法提高计算速度，并对适应值函数进行了改进。

6.The initial vsd process uses two main characters , the average instantaneous energy and the average instantaneous zero crossing rate ( zcr ) . to make the first recognition for the start and the end , the emphasis of which is to select the appropriate value of the threshold and the length of frame . in the final vsd process , the author compares several characters and confirms the new recognition character

初步分段过程使用了能量和过零率这两个主要特征进行端点检测，重点是合理选择两个重要参数? ?门限和统计帧长度的取值；在最终分段过程中，笔者首先通过比较几种特征的识别效果，选择卡尔曼滤波参数作为再次分段的识别特征，还提出了一种新的识别特征? ?周期性缓变特征，使用这两个特征分别在子语音段内进行端点检测。

7.The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation . it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design . the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence , the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample , it assures the sample approach to the pareto optimal solution set in fast convergent speed

较好地解决多阻尼比反应谱拟合问题；本文方法通过一次运行就能获得一组具有集系特性的地震动，在拟合多阻尼比反应谱的人造地震波集系的仿真方面有传统方法所不能比拟的优势，产生的人造波或人造波集系可满足工程抗震设计需要；在遗传算法中，交叉概率和变异概率是影响收敛速度的重要参数，本文采用的改进自适应交叉概率和变异概率，可以根据当前样本的好坏程度来自动地选择适当的交叉概率和变异概率，以保证算法始终以较好的速度向pareto最优解集逼近。

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