1,3,5-三苯氧基苯结构和三苯胺结构组成的具有荧光特征的星状分子:合成和光物理性质研究,王保林,许涛善,经过三步简单的合成方法合成了一系列以1,3,5-三苯氧基苯为中心和三苯胺为外部官能团组成的具有荧光特性的星状分子(2-5),并且对化合�
2024-01-17 17:13:21 433KB 首发论文
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The second lock consists of a"T"-shaped aroove in the doorThe left branch of theT is labelled source,the right branch is labelled destination. and the bottom branch is labelled storeSeveral aems are mounted in the left branch(the source)such that they can be slid along the groove toward the right or bottom branches(the destination or store.respectively).Each of the aems is numbered consecutively beainnina from oneLin notes that no numbers are skipped nor are any numbers
2022-06-02 14:03:50 1KB python 开发语言
这是一个生成功率谱匹配噪声的程序。 这主要是为了让听力学家根据现有的语音语料库(多个语音文件)生成他们自己的语音形状的噪声。 输入可以是任意数量的 wav 文件。 该程序导出所有放在一起的语音文件的傅立叶变换。 然后操纵由此获得的傅立叶变换,使得频谱分量的相位被随机化。 然后使用傅立叶逆变换将得到的修正傅立叶输出转换回时域。 结果是一个语音形状的噪声,其频谱几乎与原始语音语料库的频谱相同。
2021-12-15 18:29:25 2KB matlab
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Length and girth are central to measure the size of tube shaped objects. This paper extends circular helical curves to general tubular shapes and proposes a novel method for measuring their length and girth. We call the extended circular helixes quasi-helical curves. A formal definition, as well as
2021-02-09 09:06:50 3.75MB Quasi-helix; Tube shaped objects;
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L型声矢量传感器阵列角度平滑根MUSIC算法性能分析,徐友根,刘志文,基于子空间分解的波达方向(DOA)估计算法,如多重信号分类法(MUSIC)、根MUSIC、旋转不变参数估计技术(ESPRIT)等,往往无法适用于入射信号��
2020-01-11 03:13:07 393KB Antenna arrays array signal
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