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   剩余噪声 的翻译结果: 查询用时:0.019秒
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剩余噪声
相关语句
  residual noise
     Speech Enhancement Based on Minimum Mean-Square Error Short-Time Spectral Estimation and Residual Noise Reduction
     基于短时谱最小均方误差估计的语音增强和剩余噪声衰减
短句来源
     The problems of cosine phase unwrapping method are: 1. the residual noise in the phase cosine function after phase-shifting filter can be eliminated greatly, but the position of main wave crests, main wave troughs and zero points need judged correctly;
     余弦相位展开存在如下问题:1.选用最小二乘拟合滤波可以很好地消除相移滤波相位余弦函数中剩余噪声,但是需要准确判断拟合滤波相位余弦函数中主波峰主波谷和零点的位置;
短句来源
     The residual noise and the spectrum distortion after enhancement are adverse factors for speech recognition, and their effects will be compensated by Parallel Model Combination (PMC) in recognition stage or by Cepstral Mean Normalization (CMN) in feature extraction stage.
     语音增强带来的频谱失真和剩余噪声是对语音识别不利的因素 ,其影响将通过识别阶段的并行模型合并或特征提取阶段的倒谱均值归一化得到补偿。
短句来源
     When the PMT is simply replaced by PDA,a difference between lamp spectrum and atmosphere spectrum,as will as unwanted standard deviation of residual noise as much as 1.4×10-3 appears after corrected for the pixel response. A fiber mode mixer,based on fiber disturb mode principle was developed and tested. This new device reduces the standard deviation to 3.4×10-4 in field experiments.
     但实际应用中由于使用收发一体Cassegrain望远镜造成灯谱与大气谱结构不统一,在消除PDA像元间差异的过程中给系统带来误差,从而导致剩余噪声的标准偏差达到1.4×10-3.根据光纤扰模原理在系统中加入自制光纤模式混合器很好的解决了上述难题,在实际应用中起到良好的作用,系统剩余噪声的标准偏差为3.4×10-4.
短句来源
     H owever, the signal still contains residual noise as well as speech distortion wh ich were compensated for by Parallel Model Combination in the recognition stage or by Cepstral Mean Normalization in the feature extraction stage.
     语音增强后的剩余噪声以及语音失真是对语音识别不利的因素,其影响将通过识别阶段的并行模型合并或特征提取阶段的倒谱均值归一化得到补偿。
短句来源
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  “剩余噪声”译为未确定词的双语例句
     The third part is to suppress the background clutter and enhance the target by the methods of frame subtraction and background prediction on the basis of the analysis of the spatial and temporal property of the target and the background, to eliminate the remanent Gaussian noises using higher-order cumulant, and to accomplish the detection and recognition of pulse spectral signal.
     完成光谱信号的采集之后,在对目标信号和背景杂波的时间和空间特性进行分析的基础上,采用帧减法和背景预测法对背景杂波进行抑制、增强目标,然后利用高阶累积量进一步消除杂波抑制后的剩余噪声,将目标信号从背景杂波及系统噪声中提取出来,完成对脉冲光谱信号的检测与识别。
短句来源
     All the limit cycles in digital filters can be suppressed by the use of this method and no remaining noise exists in the filter output.
     该方法能抑制一阶、二阶数字滤波器中所有极限环,并且滤波器输出不存在剩余噪声
短句来源
     Based on examining of the noise pattern, two kinds of adaptive median filter algorithms were proposed in this paper. (1)To remove impulse noise that have high occurrence probability, we have adaptive median filter algorithm based on detecting of residual impulses (note as AMF1), through detecting the presence of residual impulse in the median filter output to decide the window size of filter, therefore effectively remove impulse noise;
     基于对噪声模型的分析 ,提出了两种自适应中值滤波器算法 :(1)对于消除噪声密度较大的脉冲干扰 ,提出了基于剩余脉冲检测的自适应中值滤波器算法 (AMF1) ,通过对滤波器输出是否存在剩余噪声的检测来决定采用的滤波器窗口尺寸 ,从而有效滤除脉冲干扰 ;
短句来源
     The use of photodiode array(PDA)detectors enhances DOAS system considerably owing to PDA's higher sensitivity and advantage in multi-channel application.
     由于光电二极管阵列(PDA)在多道探测及像元灵敏性方面的优势,采用PDA代替扫描探测装置将能改善系统剩余噪声,提高系统性能.
短句来源
  相似匹配句对
     RESIDUE SEMISLOPES
     剩余半坡
短句来源
     A Discussion about Residual Voltage
     剩余电压
短句来源
     A recommended acceptable noise level can be determined from the teacheras response to the noise under investigation.
     噪声调查;
短句来源
     and noise group (N. G.)
     和噪声组(N.G.)
短句来源
     We also study the reduction of residual noise accompanied by the enhanced speech.
     文中还对增强后剩余噪声的衰减问题进行了研究。
短句来源
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  residual noise
The standard error of the residual noise at this wavelength is about 1 mJy.
      
The simulation results show that the proposed algorithm yields less residual noise and better speech quality than the Gaussian based speech enhancement algorithms proposed in recent years.
      
With this algorithm, the image can be decomposed into constituents of different dimensionality, i.e., point-like, thread-like, and area-like structures, and residual noise.
      
The measurement precision and the source noise level of data at 21h in this region were obtained in the analysis of residual noise.
      
We use mixed model results to obtain estimates of unit-specific random effects, state disturbance terms and residual noise terms.
      
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The basic principle and method of measuring the antenna excess noise temperature Tas by using the radio stars as calibration are presented in this paper. In this method, the antenna noise temperature TAN is used as a standard of calibration when the antenna points at sky. It was found that the results of measurement using this method agree with that obtained by using liquid nitrogen at low and normal ambient temperature as standard of calibration. The method has advantage of more simplicity of the measurement...

The basic principle and method of measuring the antenna excess noise temperature Tas by using the radio stars as calibration are presented in this paper. In this method, the antenna noise temperature TAN is used as a standard of calibration when the antenna points at sky. It was found that the results of measurement using this method agree with that obtained by using liquid nitrogen at low and normal ambient temperature as standard of calibration. The method has advantage of more simplicity of the measurement and equipment. The total error of antenna excess noise temperature obtained by this method could be estimated to be ±3%. The error of antenna gain measured is about±0.3 dB.

本文介绍用天线指向冷空时的天线噪声温度T_(AN)作为定标基准,并以射电源为信标,测量天线剩余噪声温度T_(as)的基本原理和方法。与用冷、热负载为定标基准测量T_(as)相比,两者测量结果基本吻合;但该方法具有测量方法简便和测量设备简单等优点。T_(as)的测量误差约为±3%。天线增益测量精度可保持在±0.3dB左右。

This paper proposes a linearization conception of the statistical quantization characteristic of roundoff quantizer. According to this conception the method of limit cycle suppression in the first-and second-order digital filters is found. All the limit cycles in digital filters can be suppressed by the use of this method and no remaining noise exists in the filter output. The calculation method of finding the limit cycle suppression time is proposed also and the calculation results are consistent with those...

This paper proposes a linearization conception of the statistical quantization characteristic of roundoff quantizer. According to this conception the method of limit cycle suppression in the first-and second-order digital filters is found. All the limit cycles in digital filters can be suppressed by the use of this method and no remaining noise exists in the filter output. The calculation method of finding the limit cycle suppression time is proposed also and the calculation results are consistent with those obtained from experiments.

本文提出了一种舍入量化器统计量化特性线性化的概念。根据这一概念找到了一种抑制数字滤波器极限环的方法。该方法能抑制一阶、二阶数字滤波器中所有极限环,并且滤波器输出不存在剩余噪声。本文还提出了一种求极限环平均抑制时间的计算方法,计算结果与实验数据相符。

In this paper, we study three types of noisy speech enhancement algorithms based on Minimum Mean-Square Error Short-Time Spectral Estimation: Spectral Amplitude Estimation (MMSE-STSA), LOG-Spectral Amplitude Estimation (LOG-MMSE-STSA). and Relative Spectral Amplitude Estimation (MMSE-REL-STSA). On the basis of theoretical analysis, experimental studies are conducted. Computer simulations show that SNR improvement of 3.4-12dB can be obtained after enhancement processing when the original SNR of noisy speech degraded...

In this paper, we study three types of noisy speech enhancement algorithms based on Minimum Mean-Square Error Short-Time Spectral Estimation: Spectral Amplitude Estimation (MMSE-STSA), LOG-Spectral Amplitude Estimation (LOG-MMSE-STSA). and Relative Spectral Amplitude Estimation (MMSE-REL-STSA). On the basis of theoretical analysis, experimental studies are conducted. Computer simulations show that SNR improvement of 3.4-12dB can be obtained after enhancement processing when the original SNR of noisy speech degraded by Additional White Gaussian Noise ranges from 5dB to-10dB. Among the three algorithms, MMSE-LOG-STSA provides the best SNR improvement, and the SNR results coincide with informal listening.We also study the reduction of residual noise accompanied by the enhanced speech. By using the center clipping and gain function modification of estimator, the residual noise can be reduced significantly.

本文研究了三种基于语音短时谱最小均方误差估计的语音增强方法:短时谱幅度最小均方误差估计,短时对数谱最小均方误差估计和短时相对谱幅度最小均方误差估计,在理论分析基础上对它们进行了实验研究.计算机仿真结果表明,在加性白色高斯噪声污染下,当带噪语音信噪比为+5~-10dB时,处理后的语音信噪比提高了3.4~12dB。短时对致谱最小均方误差估计的效果最好,试听实验也证实了这一点。 文中还对增强后剩余噪声的衰减问题进行了研究。利用中心削波并对估值器中的增益函数进行修正,可明显地减弱剩余噪声

 
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