1)  LSF
线谱对频率
1.
A dimension reduction method of LSF parameters based on DCT is proposed to decrease codebook storage and search complexity of LSF.
为降低声码器线谱对频率(LSF)参数量化码本的存储量和码本搜索运算量,文章提出了一种基于二维DCT变换的LSF参数降维算法。
2)  linear spectrum
线谱
1.
A higher linear spectrum resolution accuracy and more information about the radiated noise of the diesel engine are obtained by combining classical PSD with w.
利用小波变换的"变焦"性能,并基于其多分辨率分析,以柴油发动机辐射噪声信号为对象,使用Daubechies小波及快速小波算法———Mallat算法对其进行塔式分解,然后进行各级小波波形结构特征提取,再结合经典谱估计的方法分析其线谱特征,进而提高线谱的分辨率,以获得更多的信息量,为柴油发动机降低噪声提供理论依据。
2.
The radiation noise from underwater target is composed of the continuous power spectrum and linear spectrum.
水中目标辐射噪声主要包括平滑连续谱和线谱两个部分,对平滑连续谱建立了功率谱数学模型,可以按照需求确定模型参数,通过Levinson算法递推出AR模型参数。
3)  line-spectrum
线谱
1.
Aming at this problem, this paper has raised out the ETAM method based on the line-spectrum features of the ship noise.
针对这一问题,文中提出了基于舰船噪声线谱特征的ETAM方法,利用舰船噪声在低频段的稳定线谱成份,采用ETAM被动合成孔径算法扩展拖曳线列阵的孔径,从而达到显著提高方位分辨率的目的。
2.
With the rapid development of signal detection and processing theories and considering the use of it in the acoustic fuse technology in the last decade, in this thesis the line-spectrum detection of ship-radiated noise is studied.
本文基于最近二十多年来信号检测与处理学科的发展，结合声引信发展需要对水下目标辐射噪声线谱检测技术进行研究，研究了一些传统信号检测处理方法实现的原理。
4)  line spectra
线谱
1.
The propagation about radiating noise from vessels is studied in this paper, continuous spectra model, line spectra model and modulated spectra model are established.
在研究舰船辐射噪声特性的基础上,对其连续谱、调制包络、线谱、声源级及多普勒频偏进行了建模与仿真,连续谱采用FIR滤波方法仿真,调制包络由高斯脉冲串组成,对舰船辐射噪声随距离、速度、方位变化的动态特性进行模拟。
2.
Based on the physical causes and spectral characteristics of torpedo radiated noise line spectra, this paper researches on feature extraction of torpedo target .
基于鱼雷辐射噪声的物理特性和线谱特征,探讨了一种鱼雷目标特征提取方法。
5)  line spectrum
线谱
1.
A method for estimating line spectrum of radiated noise from underwater target;
一种估计水中目标辐射噪声线谱的方法
2.
A united method of estimating line spectrum of ship-radiated noise;
一种估计船舶线谱的联合分析法
3.
Based on the analysis of the time-frequency distribution of the ship-radiated noise, short-time Fourier transform (STFT) is improved to extract the characteristic line spectrum from ship-radiated noise.
在分析舰船辐射噪声时频分布的基础上,改进了短时傅里叶变换(ShortTimeFourierTransform,STFT),使之更易于提取舰船辐射噪声中的特征线谱。
6)  multiple line spectra
多频线谱
1.
A novel approach to suppress the vibration with multiple line spectra is presented.
针对多频线谱振动提出一种新的主动控制方法———多通道解耦LMS自适应滤波方法。
参考词条
补充资料：聚对苯二甲酰对苯二胺纤维帘线
分子式：
CAS号：

性质： 中国商品名为芳纶1414，属芳香聚酰胺纤维类。由对苯二甲酰氯和对苯二胺，经缩聚、纺丝和后处理制成纤维，再经加工和浸渍处理制成帘线。它兼具耐高温、高强度、高模量、尺寸稳定性好等特性，是一种较理想的橡胶工业用骨架材料。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。