介绍一种平稳噪声环境下语音识别的新的方法。
This paper presents a new method for speech recognition in stationary noise.
在辨识实际系统时，非平稳噪声扰动是较多见的。
The systems disturbed by nonstationary noise are often encountered in the practical identification.
首先通过跟踪平稳噪声能量，检测能量变化非平稳的信号；
First, the noise energy is tracked to detect the unstable signal.
该算法无需先验知识和参考信道，且对平稳或非平稳噪声均适用。
This algorithm doesn't need priori knowledge or reference channel, and it can be used in the stationary or nonstationary noise environment.
实验表明：非平稳噪声在时域中是可以识别的，与传统的噪声频域检测方法相比，分辨率有明显的改善。
Simulation results show that non-stationary noise can be identified in time domain and resolution improvement is obvious compared with that of conventional noise detection in frequency domain.
针对语音激活检测的鲁棒性问题，提出在非平稳噪声环境下使用基于复高斯混合模型的鲁棒语音激活检测算法。
In order to improve the robustness of voice activity detection (VAD), the use of an algorithm based on complex Gaussian mixture model under nonstationary noisy environments was presented.
为提高数字谱仪的能量分辨率，利用约束最优化方法提出了一个在任意平稳噪声背景下直接设计最佳数字有限冲击响应（FIR）滤波器的方法。
The energy resolution of digital spectroscopy can be improved by finite impulse response (FIR) filters optimized for the presence of any kind of stationary noise.
所有传动部件改以往的链条传动为同步齿形带传动，其传动更平稳，噪声更小。
All transmissions part changes from chain drive structure to synchronized tooth belt, which has more smooth transmission and less noise.
文章深入分析了高光谱遥感数据中噪声的特点，提出了一种基于平稳小波变换的改进小波滤噪算法。
This paper analyzed the characteristic of noise in hyperspectral data deeply, and puts forward a de-noising method based on stationary discrete wavelet transform (SDWT).
然后，从理论上分析了它抵消平稳随机过程中与信号不相关的加性随机噪声的机理；
Then, The WVD function's mechanism of suppressing additive random noise in stationary random process is analyzed theoretically.
涡旋机械由于其结构简单、效率高、体积小、噪声低、运转平稳等特点被应用于车用增压器技术中。
Scroll machine which possess characteristics of high efficiency, small bulk, light weight, low noise, simple structure and working smoothly etc, is used in supercharged vehicle engine.
平稳的噪声和干扰的谱相关为零。
The spectral correlation of stationary noise and interference is identically zero.
在考虑多通道非平稳信号干扰及背景噪声的情况下，提出了基于自适应参数型时间延时估计方法。
Taking into account the multi channels disturbance and noises with the non stationary characteristic, time delay estimation based on adaptive parametric approach is proposed.
文中利用对称相关函数理论，分析了抵消平稳随机过程中与信号不相关的加性随机噪声的机理，并应用于线谱信号检测。
The theory of symmetrical function is used to suppress additive stationary random noise; assumption is that the signal and the noise are mutually uncorrelated.
与渐开线齿轮泵相比，圆弧齿轮泵的特点是：体积小、无脉动、转动平稳、效率高、噪声低以及寿命长等。
Comparing with involute gear pumps, circular tooth gear pumps have following characteristics: compact structure, no pulsation, stable rotation, high efficiency, low noise, and long working life.
减速机的承载能力增大，效率提高，噪声降低，运转平稳。
And this speed reducer possesses big bearing capacity, high efficiency, low noise and smooth running.
根据平稳随机过程理论，利用白噪声驱动成形滤波器，获得海浪的干扰模型，并得到了令人满意的仿真结果。
Using white noise to drive shaping filter, the interference model of wave is acquired on the basis of stable stochastic process theory, and the simulation results are satisfactory.
提出一种在平稳随机噪声中检测暂态信号的循环双谱切片方法，同时给出仿真结果。
The method of detection on transient signal by the slice of cyclo bispectrum in stationary random noise is proposed in this paper, simulation results are presented also.
在非平稳非高斯背景噪声下，使用经典信号检测理论对信号进行检测往往难以达到理想的效果。
If the background noise is nonstationary and non-Gaussian, the effect of classic signal detection theory is not satisfying.
橡胶隔振弹簧，弹簧使用年限长，噪声小，共振区平稳等特点。
The Rubber vibration isolation spring with the characteristics of long service life, low noise and stable resonance region.
当噪声的方差已知，且过程是平稳的，应用递推最小方差估计，能够增强信号。
When the noise variance is known, and it's process is stationary, the signal can be enhanced by use of the recursive least mean-square estimation.
证明了在存在噪声干扰及网络设计误差的情况下，网络训练过程具有指数收敛性和鲁棒平稳性。
The exponential convergence of the training process and its robust stability to the noise perturbances and the network design errors are also proved.
螺杆泵特点是：流量平稳，压力脉动小，能够自吸，噪声低，效率高，使用寿命长，工作可靠。
Screw pump features are: smooth flow, small pressure fluctuation, imbibition, low noise, high efficiency, long service life and reliable operation.
采用托瓶提升气缸，油尼龙齿轮转动，噪声小，整机运转平稳。
Pneumatic valve and damped gears are used for bottle conveying, the noise is low and the whole machine runs smoothly.
根据信号的循环平稳特性，本文提出一种加性高斯白噪声信道中基于循环频率估计的PS K信号存在性检测算法。
A presence detection algorithm based on the estimation of cyclic frequency for Phase Shift-Keying (PSK) signals in additive white Gaussian noise (AWGN) is proposed in this paper.
地面运动加速度功率谱模型为零均值的平稳高斯过程，描述为过滤白噪声施加于支撑各点。
The power spectral density function of ground acceleration can be described as filtered white noise applied on each support point.
循环平稳处理方法对高斯色噪声不敏感，对非高斯色噪声也有较强的抑制作用，而且在低信噪比情况下工作良好。应用于低信噪比环境中。
Cyclostationary method is not sensitive to the Gaussian color noise and can do with non Gaussian color noise as well, which is proved to be effective in low SNR environment.
该文利用小波包变换的时频局部分析能力，研究了非高斯分布平稳随机噪声的统计特性，揭示了非高斯噪声信号的信号结构。
By exploiting wavelet packet transform to analyze signals both in time and frequency space, this paper researches the statistic property of non-Gaussian stationary noise and its signal structure.
近年来，市内车流量呈显著攀升趋势，噪声污染基本保持平稳。
While the traffic noise has been held in basically, the vehicle flux has showed distinct uptrend in recent years.
对线性叠加在中值系列中的平稳随机噪声，用默认软阈值小波消噪平滑中值序列中的随机噪声分量。
As for the stable stochastic noise component linearly superposed on the median series, it is smoothed by means of the default soft threshold wavelet de-noising.
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