查询词典 threshold frequency

Then, incomplete beta function is applied to enhance the image′s global contrast in the low frequency subband, and nonlinear gain function is used to process the coefficients at each scale in the directional bandpass subbands respectively, which suppresses small coefficients and enhances big coefficients by threshold denoising method.

引入非完全贝塔函数对低频子带系数进行处理，提升图像整体对比度；采用非线性增益函数对各带通方向子带系数进行处理，通过估计噪声水平设定阈值，抑制绝对值小于阈值的系数，增强大于阈值的系数。

According to the signal characteristics, three candidates algorithms, threshold judgment through Lenner Filter Banks, Notch adaptive filter and VIFD(Variance of Instaneous Frequency Detector), and complex correlation detection, have been selected and tested. To maximize the accuracy and fulfill other parametric requirements of the system, simulation models are established on these selected algorithms, and data analysis work is done basing upon vast sampling.

根据信号的特点，选取了Lenner滤波器阈值判断、Notch自适应滤波器和VIFD联合判断以及复相关检测三种算法，建立仿真模型对三种信号检测算法分别进行仿真以及用实际的海试数据来选出一个比较合适的算法，保证标定系统的标定精度，满足指标的要求。

LA1060. he masker frequency was then increased to 1060 Hz, and the two threshold measurements repeated with all other parameters remaining the same.

然后，将遮蔽频率增加到1060赫兹，当所有变数维持相同的状态下重新测量其遮蔽门槛。

Under drip irrigation, ET was clearly affected by the threshold of soil matric potential and the irrigation frequency.

在滴灌条件下，马铃薯腾发量受土壤基质势下限的影响要比灌水频率的影响大。

The maximum likelihood estimator approach is an important one in frequency estimation domain. This approach has the merit such as exhibiting best performance and requiring minimum threshold of signal noise ratio in calculation.

最大似然频率估计法是该领域中的一种重要的研究方法；该方法具有估计结果准确，计算所要求的信噪比门限值低等特点。

Because the spatial hole burning is much small in MQW lasers, the influence of this gain coupling effect on the threshold gain and frequency shift in MQW lasers will be obliviously.

标 签 半导体激光器空间烧孔分布反馈增益耦合 semiconductor lasers spoilal hole burning distributed feedbeak gain coupling

At present ,the company introduced the Multi -Position NC Punch, NC shear-bending machine and other high-tech production equipment, become a South China elevator door, the door of the components , security controls,variable frequency door machine , on the threshold of the component parts, such as elevator major production base

目前，公司引进了多工位数控冲床、数控剪弯机等高科技生产设备，成为华南电梯开门构、层门组件、安全部件、变频门机上坎组件等电梯部件的主要上产基地。

The article introduces a kind of dual threshold frequency control circuit for digital control device.

文章介绍了一种数控装置的双门槛频率控制电路。

The modes of electromagnetic wave and threshold frequency related to three waveguides are also discussed.

本文同时讨论了相关的波型和截止频率等问题。

This article analysed the method of enhancement in frequency and space threshold, and adopted the enhancement method correspond to the image.

对频率阈和空间阈的图像增强方法进行了分析，并针对研究的图像采用相应的增强算法。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。