2) leveled spectrum
谱平整
1.
The pitch extraction is implemented by leveled spectrum autocorrelation.
用谱平整自相关法设计了基音检测器,提出了峰检测时的纠偏措施,采用可变阈值作为峰检测的门限,增加了帧能量和过零率来辅助进行清/浊音判决,对基音周期又进行了平滑,使得基音检测的准确性得以提高。
3) spectrum shaping
频谱整形
1.
A new method of the chirped-pulse spectrum shaping is put forward in this paper based on the above course.
提出了利用这一过程实现啁啾脉冲频谱整形的一种新方法。
2.
A new method of spectrum shaping technique is proposed based on adjusting peak value of spectrum and multi scale factors to overcome these two disadvantages.
提出了一种新的基于峰值调整和多缩放因子的频谱整形技术,该技术可克服以上2个缺陷,并给出了主观和客观评价。
3.
According to the key problem in DAA,spectrum shaping for UWB transmitted waveform,the state of arts on the research work is reviewed,and the development trend is analyzed.
针对DAA技术的关键问题——如何实现UWB抗干扰发送波形的频谱整形,综述了近年来在UWB适配波形的频谱整形研究领域的最新进展,并对未来研究发展方向进行了分析与探讨。
4) spectrum adjusting
光谱调整
1.
The design methods of key data,such as spectrum adjusting range,resolution and diffraction efficiency,are specially introduced.
介绍了应用于超短脉冲系统光谱整形的声光光谱均衡器,描述了声光光谱均衡器的工作原理,着重介绍了光谱均衡器关键指标光谱调整范围、分辨率、衍射效率的设计方法,得到了通光口径3 mm、控制光谱范围770~830 nm、8路独立控制及峰值衍射效率80%的实验结果。
5) spectrum shaping
光谱整形
1.
In order to take full advantage of amplifier gain-bandwidth,and obtain a shorter pulse with higher power in the terminal,it is necessary to conduct a spectrum shaping before the seed pulse being injected into the main amplifier chain to compensate the effect of gain narrowing.
为了充分利用放大介质的增益带宽,获得脉宽更短,功率更高的输出脉冲,需要将输入到主放大链的种子脉冲进行光谱整形来补偿放大过程中的增益窄化效应。
2.
Through the spectrum shaping, the bandwidth of the regeneratively amplified pulse was increased from approximately 20 nm to approximately 35 nm, which is near the bandwidth of the seed pulse.
采用腔内和腔外两种方法对激光脉冲进行光谱整形。
3.
The spectrum width is expanded from 38 nm to 66 nm,and the output laser pulse is consequently squeezed from 35 fs to 20 fs in the 10 Hz femtosecond regenerative amplifier,with an acoustic-optic programmable dispersive filter(AOPDF) for dispersion pre-compensation and spectrum shaping of the input seed pulses.
实验结果表明,利用可编程声光色散滤波器能够同时独立进行光谱整形和大范围内色散补偿的特性,可以有效抑制啁啾脉冲放大过程中存在的谱线增益窄化效应,补偿钛宝石激光系统中存在的残留色散。
6) integral graph
整谱图
1.
Cocktail party graphs G=CP(n)=K2n-nK2 is an integral graph.
设图G是一个简单图,图G的补图记为G,如果G的谱完全由整数组成,就称G是整谱图。
2.
Based on the study of the bipartite semiregular graph and characteristic multinomial formula of bipartite graph,the necessary and sufficient conditions for some classes of integral graphs are obtained,and some special graphs are given.
研究二部半正则图的补图、二部补图的特征多项式公式 ,给出几个特殊图类的谱 ,得到几类整谱图的充要条件及一些新的整谱图类 。
3.
By using the operator generalized line graphs on some integral graphs,a series of infinite integral graphs is constructed.
对一些整谱图,运用一种全新的广义线图算子方法,构造出了一系列无穷多个新的整谱图。
补充资料：《佩文斋广群芳谱·药谱》
《佩文斋广群芳谱·药谱》 《佩文斋广群芳谱·药谱》 药学著作。又名《广群芳谱·药谱》。八卷。清·刘灏著。刊于1708年。本书为《佩文斋广群芳谱》卷九十三-一百，共收药物720余种，系在《二如亭群芳谱·药谱》的基础上增补而成。每种药物标记的“原”字下，均为《群芳谱》原文，“增”字下，为新增加的内容，特别是新增的“汇考”及“集藻”二项，补充各种文史资料尤为丰富。此外还新增补了一些新药。但却删去了原书中种植、修治、服食、疗治等内容。现存三种清刻本，及商务印局馆铅印本。
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