1) window spectrum
窗谱
1.
Because of the variety of window functios and the complicated spectrum formulas of most window function,the rectifying technique by using the wave pattern of the window spectrum is limited.
仿真结果表明窗谱图形峰值搜寻校正方法同样可达到窗谱公式校正方法的精度。
2.
Based on comprehensive analysis to the dependence of four methods of discrete spectrum correction to window spectrum(interpolation correcting method,energy centroid correcting method,FFT+FT method and phase difference correcting method),an universal method of discrete spectrum correction independent of window spectrum is presented.
在系统分析了离散频谱校正的四种方法(比值法、能量重心法、FFT+FT法和相位差法)对窗谱函数的依赖关系的基础上,将相位差法和连续傅立叶变换法有机结合起来,提出了一种精确的、不依赖窗谱函数的通用离散频谱校正方法,并通过仿真分析验证了该方法的正确性和有效性。
2) spectral window
谱窗
3) spectrum window
光谱窗口
1.
Selection of droplet transfer specific spectrum window;
焊接电弧熔滴过渡特征光谱窗口的选择
4) multitaper spectrum method
多窗谱法
1.
A new speech enhancement method based on multitaper spectrum method and wavelet thresholding is proposed so that a noisy speech power spectrum is obtained.
提出了基于多窗谱法和小波阈值法对带噪语音的短时功率谱进行估计的语音增强改进方法。
5) Spectrum opening windows
频谱开窗
6) the frequency spectrum
频谱窗
1.
This paper derives the frequency spectrum of digital filters from the Fourier theory, and derives the noise compression degree of digital filters from the theory of stochastic process.
根据傅里叶理论导出了数字滤波器的频谱窗 ;根据随机过程理论导出了数字滤波的噪声压缩度。
补充资料:谱窗
谱窗
spectral window
谱窗〔s碑ctrai雨l‘附;c“留p呱Hoe。口o],谙密度估计量的 角频率几的函数,用来在平稳随机过程(stat玩-娜stochastic plocess)X(t)的谱密度(spectral山姐-sity)f(又)的非参数估计中定义一个权函数,以光滑从该过程的观测数据构造的周期圈(peri(月09知m).作为谱密度在一点又。处的值的估计,通常取在又的周期图与一形如BNA(B、(又一又。))的表达式之积对d又的积分,其中B、是一个实数而A(幻是频率的确定函数,它在几=O处取其最大值且关于又的积分等于1.这个函数通常称为谱窗生成元(spectrai俪n-dow generator),而“谱窗”一词则用来称呼函数B、A(B,劝.谱窗的宽度为B粼,它依赖于样本容量N(即过程X(t)的被观测实现的长度)且当N~的时趋于零(但比N一,要慢).谱窗的Fourier变换(在离散时间t的情形下,一兀毛又<兀,则是其Fourier系数的集)称为谱密度估计的滞后窗(吨俪n-dow).它定义一个离散或连续自变量(依赖于t为离散或连续)的权函数,由它乘以从给定样本算出的样本自相关函数,其所得乘积的Four记r变换即为所要求的谱密度估计t(speetrai density,estin祖torof1」le).
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条