查询词典 noise

You can use this program through a Butterworth filter produces colored noise and find the noise waveform and power spectrum.

详细说明：你可以用这个程序通过一个巴特沃兹滤波器产生有色噪声，并求出噪声的波形和功率谱。

In the canceler, external noise may be digitally converted and the inverted noise thereof stored in a memory.

在消除器，外部噪声可能是数字化转换和反向噪声其存储在存储器中。

The echo canceler of the present invention includes a pseudo noise generator for generating a certain pseudo noise.

用于进行回波路径估测并去除话音障碍的回波消除器，包括用于产生一定的伪噪声的伪噪声发生器。

It can be seen from the theoretical analysis that the signal to noise ratio in the output of the canceler will improve when the signal to noise ratio in the reference input drops.

通过理论分析可以看出，随着本艇自噪声有源抵消器参考输入端信噪比的降低，系统输出端信噪比升高。

Concerning the detection of weak speech signal in stronger noise background, an effective modified model based on Simulink and FDATool is proposed. The model is composed of double bandpass digital filter and traditional adaptive noise canceler.

针对强噪声背景中语音信号提取的难度，提出一种基于Simulink和FDATool的改进型信号提取模型，该模型在传统自适应噪声消除器SIMULINK模型的基础上通过增加双带通数字滤波器实现。

Through the noise analysis between circular oscillators composed of general differential amplifer element and of capacitive coupling differential amplifier element, it is found that the later,due to its band-pass and dynatron characteristics,provides a better anti-noise performance,which can be used in VCO circuits having a high requirement on frequency stability.

通过对采用由普通差分放大器单元和容性耦合差分放大器单元构成的环行振荡器的噪声分析得出，由容性耦合差分放大器单元构成的环行振荡器，因其带通特性和负阻特性而具有较好的抗噪声能力，可用于对频率稳定度有较高要求的VCO等电路中。

This algorithm firstly calculates the fourth-order cumulant and second-order central moment of the window and identify noise threshold. Later it adaptively adjusts the filter windows and right value according to the number of the noise points in the window.

算法首先计算窗口的四阶累积量和二阶中心矩并确定噪声点阈值：然后根据窗口内噪声点个数自适应调整滤波窗口，自适应计算权值；最后对噪声点逐点滤波。

A new method is proposed to apply generalized chi square distribution to describe the asymmetrical distributions of noise correlation,and using generalized Gaussian distribution to describe the symmetrical distributions of noise correlation.

实验结果表明，该方法与仅采用一个广义高斯分布的方法相比，可以使鉴别错误率降低38%以上，可见利用不同的概率密度函数来描述相应的分布是减小鉴别错误率的一个有效途径。

A pattern filter based on color noise pattern is proposed to remove this kind of color noise.

本文构造了一种基于模式识别的滤波方法，用于有色噪声的消除。

If the system is narrow band system,the noise is color noise and matching filter cannot be used.

如果系统是窄带系统，噪声为色噪声，无法使用匹配滤波器，不能提高信噪比。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。