-
对小麦声信号进行编辑和预处理，实验结合信号处理技术及MATLAB软件
我国是世界上小麦种植面积最大和消费最高的国家之一。小麦为国际主粮之一，也是食品工业的重要原料。作为最重要粮食品种之一的小麦，其价值与用途取决于它的品质。因此，基于信号处理技术，研究客观、便捷的小麦品质测定方法对提高小麦品质、减少产后损失、保证国家粮食安全具有十分重要的意义。本课题拟在研究、分析国内外无损检测技术在农产品品质分析应用现状和研究进展的基础上，研究小麦籽粒声信号的预处理方法。根据声学检测原理，研制出小麦籽粒的声信号采集装置，首先采集小麦籽粒下落碰撞所产生的声音信号，对小麦声信号进行编辑和预处理，实验结合信号处理技术及MATLAB软件，对单粒小麦样品的声信号进行谱估计和小波变换，提取出时域和频域特征参数，为探讨小麦声学特性与其品质指标的关系奠定基础。本论文利用MATLAB软件编写小麦声音信号预处理程序，通过对小麦籽粒声信号进行处理，成功的提取出了有效的时域、频域的多种特征参数，为研究其声学特性与小麦品质内在的关系，做了充分的准备工作。(China is one of the countries in the world which has the largest wheat growing area and highest consumption. Wheat is one kind of the staple food in the world and also an important material for food industry. The value of wheat and its use all depends on is quality, To enhance quality of wheat,readuce post harvest loss and ensure grain security, great efforts should be made to develop rapid, objective, and easy methods for assessing wheat quality using signal processing techniques. This paper do the research of wheat signal preconditioning method and it basis of analysis domestic and foreign non-destructive testing technology.According to acoustic detection theory,an equipment of obtaining wheat sound signals is developed. Collecting the dropping voice signals of different varieties of wheat samples.And then do editing and sound signal preprocessing on wheat through signal processing technology.This paper do some research about spectrum estimate and wavelet transform on single wheat wi)
- 2020-06-30 06:40:02下载
- 积分：1
-
lag2fqd
拉格朗日算法已知三组温度与压力数据:(3,53.5) (4,55.3) (5,56.2)求4.15对应的值为55.492375，结果正确。如果将以上数组顺序颠倒，已知压力55.492375求对应的温度，结果为4.185739，可以看到上下两个结果误差较大，就是说不能象这样去颠倒顺序去求值的。但是实际上我们可能经常要求知道压力去求温度，那么遇到这样的情况，只能采用试算法：一种简单的方法就是二分法迭代，书上都有介绍就不多讲了。(Lagrange method已知三组温度与压力数据:(3,53.5) (4,55.3) (5,56.2)求4.15对应的值为55.492375，结果正确。如果将以上数组顺序颠倒，已知压力55.492375求对应的温度，结果为4.185739，可以看到上下两个结果误差较大，就是说不能象这样去颠倒顺序去求值的。但是实际上我们可能经常要求知道压力去求温度，那么遇到这样的情况，只能采用试算法：一种简单的方法就是二分法迭代，书上都有介绍就不多讲了。)
- 2010-11-09 23:13:14下载
- 积分：1
-
timer
一个基于matlab实现的计时器源码，供大家学习。(A matlab implementation of the timer source for everyone to learn.
)
- 2012-04-28 11:53:10下载
- 积分：1
-
ShuZhiFenXi4
单位圆的内插实现，里面有4种内插算法：拉格朗日插值、牛顿插值、分段线性插值、分段样条插值、以及插值误差范数估计等等(Interpolation to achieve the unit circle, which has four kinds of interpolation algorithms: Lagrange interpolation, piecewise-linear interpolation, sub-spline interpolation, as well as Norm interpolation error estimates, etc.)
- 2010-01-15 20:38:07下载
- 积分：1
-
Cramer2Rao_Bound
对于参数估计问题,克拉美罗界(简称CRB)为任何无偏估计量的方差确定了一个下限. 即不可能求得方差小于下限的无偏估计量,并为比较无偏估计量的性能提供了一个标准. 本程序对CLRB（克拉美罗下界）进行了描述，预留了参数。 希望能对同志们提供帮助。(For the parameter estimation problem, Cramer-Rao bound (referred to as CRB) for any unbiased estimator of variance to determine a lower limit that can not be obtained is less than the minimum variance unbiased estimator and unbiased estimator for comparing the performance of provides a standard procedure for this CLRB (Cramer-Rao lower bound) for a description of the reserved parameters. Hoping to help comrades.)
- 2020-11-29 23:09:28下载
- 积分：1
-
emd
HHT PPT for Hilbert Huang Transform EMD
- 2012-10-12 13:13:17下载
- 积分：1
-
单人彩色图像人脸检测
对一副人物照片进行局部人脸的识别后，再用混沌系统产生的序列进行加密。(After the local face recognition of a character picture, the sequence generated by the chaotic system is encrypted.)
- 2017-06-13 10:24:08下载
- 积分：1
-
supportvectormachine
svm 支持向量机代码 support vector machine(support vector machine svm)
- 2010-08-09 11:25:25下载
- 积分：1
-
extend_of_Matlab
介绍matlab编程的经典著作,包括与VC++进行联合编程,还包括一些经典的算法和源程序(Matlab programming on the classics, including the VC and joint programming, also including some classic algorithms and source)
- 2007-06-06 23:26:29下载
- 积分：1
-
CodeI For Small Target Detection
matlab 编写 红外弱小目标检测，适合在小范围小目标中做检测，本代码应调试完成，可以直接根据文件中readme.txt运行代码。主要原理是找到图片中最大峰值并予以表示出来。(Matlab writing infrared dim small target detection, suitable for small range of small targets to do the test, the code should be debugged, you can directly run the code in accordance with the file readme.txt. The main idea is to find the maximum peaks in the picture and represent them.)
- 2017-07-25 09:23:32下载
- 积分：1
