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NMR-data-processing-water-detector
核磁共振（NMR）技术探测地下水是目前唯一的直接找水的地球物理方法。与传统的地球物理方法相比具有高分辨力，高效率，信息量丰富和解唯一性等优点。利用核磁共振地下水探测系统可以高效率地进行区域水文地质调查，确定找水远景区，圈定地下水在三维空间内的分布，进而可靠地选定水井位置等。但是由于水中氢核产生的核磁共振信号的幅度小（纳伏级），要求探测系统的灵敏度高，将引入大量的自然和人为噪声，导致采集信号的信噪比低，解释结果不清楚。
本文用LMS自适应算法提高MRS信号的信噪比，用Hilbert变换提取MRS信号的包络信号，用线性拟合提取水文地质参数并通过仿真实验结果，验证了本文提出的数据处理方法的有效性和准确性。
(Nuclear magnetic resonance (NMR) technique to the detection of direct water division is the only geophysical method to find water. Compared with conventional high-resolution geophysical methods, efficient, informative unique advantages of reconciliation. Groundwater exploration using nuclear magnetic resonance system can efficiently carry out the regional hydrogeological investigation to determine the prospective areas to find water, delineation of ground water distribution in three-dimensional space, and then reliably the location of the selected wells. However, because the water proton NMR signal amplitude generated by small (Na V level), requiring high sensitivity detection systems, will introduce a large number of natural and man-made noise, resulting in low signal to noise ratio acquisition, interpretation of results is not clear.
In this paper, LMS adaptive algorithm improves the MRS signal to noise ratio, with the Hilbert transform to extract the signal envelope MRS signal ext)
- 2013-05-15 20:23:30下载
- 积分：1
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ConvertToOne
能有效实现语音合并，将两个相同采样率和相同精度的语音文件合并成为一个相同采样率和相同精度的语音文件。(Can effectively realize the merger of voice, and the two the same sampling rate and the same precision audio files into a different sampling rate and the same accuracy of voice files.)
- 2007-10-11 17:33:49下载
- 积分：1
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duoxinhaofenli
多信号分离MUSIC的经典学习程序
对初学者帮助很大(it is a baisc and useful code of the multiple signal classfication for the beginners.)
- 2013-09-11 20:32:20下载
- 积分：1
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speechhmm
运用HMM进行语音识别之后的孤立词识别，里面函数俱全。可以直接运用，简单方便(Speech recognition with HMM isolated word recognition, which function and taste. Can directly use, simple and convenient)
- 2012-12-01 14:07:09下载
- 积分：1
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mesht
一个通过实际应用的“
人工鱼群算法”，效果很好的。(Through the practical application of the " artificial fish-swarm algorithm," good effects.)
- 2009-03-23 11:06:42下载
- 积分：1
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lpcc
用matlab实现LPCC特征的提取的程序！(Using matlab realize LPCC feature extraction procedure!)
- 2008-03-18 12:31:40下载
- 积分：1
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mfcc
谱减去，最常用的程序，实习除噪，语音增强(To achieve denoising)
- 2012-05-08 15:39:06下载
- 积分：1
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MFCC
MFCC算法的matlab实现,该算法清晰明了，简单易懂，非常的适合初学者。(The realization of MFCC algorithm based on MATLAB)
- 2018-05-28 21:40:27下载
- 积分：1
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sources_4610
Praat4610 语音合成及分析源代码(Praat4610 speech synthesis and analysis of source code)
- 2008-07-18 18:04:29下载
- 积分：1
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speech-signal-processing
用matlab对采集到的语音进行语音信号处理 包括设置各种滤波器 低通 高通 以及带通
设置好后 观察结果 (speech signal processing)
- 2012-04-25 09:16:52下载
- 积分：1
