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- We develop an auto-modulated scheme of a crucial parameter calculation by a noise spectrum estimation to ameliorate the issue of parameter setting in conventional adaptive threshold schemes. 本文针对传统语音活动侦测演算法中，需预先决定门槛值的方法作改良，并利用杂讯频谱自动计算于门槛值估测中所需之关键参数，改良过去演算法设定参数之方法。
- noise spectrum estimation 噪声谱估计
- As one high order spectrum estimation, bispectrum estimation is widely used. 双谱估计是一种应用广泛的高阶谱估计。
- Fast adaptive estimation of noise spectrum 一种快速自适应噪声谱估计方法
- Liu, Y., Z.Yu, and S.Jiang, 1990: Cospectrum and quadrature spectrum estimation by the maximum entropy method. 周良明、刘玉光，2003：利用地物光谱仪数据研究水汽对太阳辐射的吸收。
- This paper is an application research on the algorithm of Bayesian spectrum estimation. 本课题是对贝叶斯频谱估计算法的应用性研究。
- However, the noise spectrum of the ash exhauster always centers at low frequency range. 排粉机噪声呈明显的低频特性。
- The improvement of the accuracy of the wavelet based evolutionary spectrum estimation is discussed, which is based on the original work of Priestley. 在Priestley提出的基于小波分析进化谱理论基础上 ;对改进进化谱估计的性能进行了研究 .
- Based on the calculation of intensity noise spectrum, comparative study of XPM and SRS induced crosstalk is performed analytically and numerically. 在计算强度噪声谱的基础上,研究了互相位调制和受激拉曼散射的相互耦合并用于密集波分复用系统的噪声分析。
- Since DFT can he calculated via its fast algorithm FFT, the compulation is less than the conventional spatial spectrum estimation algorithm. 由于离散傅里叶变换可以用其快速算法FFT进行计算;较之传统的空间谱估计而言;计算量有很大地减少.
- At present,its main parameters are fundamental frequency,amplitude of vibration,perturbation(Jitter,Shimmer),noise spectrum(HNR,SNR,NNE),et al. 目前应用的主要参数有基频、振幅、微扰值(频率微扰、振幅微扰)、噪声谱(谐噪比、信噪比、标准化噪声能量)等。
- To demodulate GMSK signal,DSP is used in receiver to achieve error spectrum estimation,bit synchronization recovery and decode. 为了实现GMSK信号解调，接收机中DSP实现了调制信号的误差频谱估计、位同步恢复及译码。
- Two cases of power spectral intensity function for the earthquake acceleration imput at the base rock are considered: the white noise spectrum and filter white noise spectrum. 计算结果表明，1)在基岩输入地震加速度的功率谱为白噪声谱的情况下，土层的最大期望反应均有别于过滤白噪声谱时的相应值；
- A phase detection method based on the Bayesian spectrum estimation is proposed for improving the accuracy of traditional phase analysis method in this paper. 摘要针对传统的相移分析方法误差大的问题，通过合理的选取信号模型，采用贝叶斯频谱估计算法对实验中输入输出信号进行了相位识别。
- Objective To improve the estimation and the percentage of electrogastrogram(EGG)slow wave rhythm with power spectrum estimation and calculation rule set. 目的从功率谱估计和计算规则两方面对胃电慢波节律百分比的计算方法进行改进。
- In addition, the key algorithm of the classic periodogram spectrum estimation has been improved with split-radix algorithm that can shorten the time of program executing. 另外，采用分裂基算法对经典的周期图谱估计的关键算法进行了改进，可缩短程序运行时间。
- The feature of radiated noise line spectra of underwater moving-target was extracted by the united spectra estimation method based on the traditional and modern spectra estimation. 基于经典谱与现代谱估计的联合估计法提取水下目标辐射噪声线谱特征,首先分别估计采集数据的功率谱,得到估算功率谱图;
- For example, many authors look at the signal they are able to measure and fail to note that the noise spectrum may provide information on fundamental processes that might limit detectability. 这是真正的气愤--审稿人会认为你在欺骗审稿过程，于是大斧来了。
- In the calculation of STFT, discrete Fourier transform (DFT) is replaced by autoregressive (AR) spectrum estimation, and a new method based on AR spectrum estimation is gained, namely short-time AR spectrum analysis. 通过对传统的短时Fourier变换进行改造;在短时Fourier变换的计算中利用自回归(AR)谱估计代替离散Fourier变换(DFT);得到了一种基于AR谱估计的短时AR谱分析方法.
- The treatment of laser noise and its effect on the laser noise spectra up to this point involved semiclassical arguments. 到目前为止，都是用半径典理论处理激光噪声及其对激光频谱的影响。
