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<table border="0" cellpadding="3" cellspacing="1" width="100%" class="forumline"> <tr> <th class="thCornerL" width="22%" height="26">Author</th> <th class="thCornerR">Message</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>logoxgvb</b></span></td> <td class="row1" height="28" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/sky/images/icon_minipost.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Posted: Sun 3:20, 08 May 2011<span class="gen"> </span> Post subject: franklin and marshall clothing Bandpass filter bas</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">,<a href="http://www.franklinandmarshalluk.com" target="_blank" class="postlink">franklin and marshall clothing</a> <br />Bandpass filter based on complex analytical refinement of the complex modulation spectrum analysis theory and methods <br /> <br /> <br />To refine the band edge frequency of the magnitude error less than 1%, and does not take into account the error generated when the frequency resolution after refinement of the frequency spectrum of the theory and computer-generated signal frequency exactly equal. To demonstrate that the proposed refinement method is correct. Clocked at 200MHz, the CPU on the computer simulation. Refined using a filter of 100 times, for a period of detailed analysis of just-t00 ms; refined by two filters 2000 times, for a detailed analysis of just 4 seconds, very fast. To improve the speed and error to achieve the accuracy within 1 Jue, select the width of the primary and secondary filter bandwidth, half the order and the second filter in parallel processing method has theoretical analysis and simulation, as and so on Dingkang: bandpass filter based on complex analytical refinement of the complex modulation spectrum analysis principles and methods of space relations, will specialize in another article in the summary of its traditional refinement algorithm 5 is the first sample taken long before will adopt a long complex data like frequency shift,<a href="http://www.toryburchukshoes.com" target="_blank" class="postlink">Tory Burch shoes</a>, and then re-sampled data points on the low-pass anti-aliasing filtering, the FFT and spectral analysis, the final component to adjust the frequency band-pass filter based on complex analytical refinement of the complex modulation spectrum band selected method is to adopt a long way, band-pass filter using complex analysis of time-domain signal interval D (refinement factor) of 2D points or data points re-sampled complex analytic band-pass filter, frequency shift, the FFT and spectral analysis with the traditional thinning complex modulation spectrum analysis compared with the following characteristics: (1) to save memory and speed as = only refine the selected pumping frequency shift points, saving the memory space, and reduce the computational workload. In the CPU frequency is 200M [-Iz simulation on a microcomputer, using a filter refinement of 100 times, for a detailed analysis of just 400 milliseconds; refined by two filters 2000 times, for a period of detailed analysis of only 4 seconds (2J simple filtering as pumping before the election, after the frequency shift, as long as the analysis moved to the starting frequency of the zero frequency point FFT, you do not need the frequency adjustment process more complex, FFT,<a href="http://www.abercrombiedeutschlande.com" target="_blank" class="postlink">Abercrombie Deutschland</a>, and spectral analysis detailed analysis of the band is the band. (3) high precision bandpass filter using a complex analysis of the width / 2D, separated, j click pumping that for the frequency shift and Ⅳ point spectrum analysis, detailed band (~ f) with N / 2 条 second independent line, said the new refining method, the complex analytic negative frequency part of the amplitude of the filter is zero, the filter characteristics can greatly reduce the requirements. filter bandwidth can even be outside the expansion of 100% and still meet the greatly increased accuracy of the biggest factor refinement and refinement of the accuracy of spectral analysis, is the best detailed analysis L4) refinement ratio high, due to savings in the intermediate calculations required memory and reduce the filter feature requests. meet the required accuracy has been greatly improved refining multiple simulation study shows that a digital filter with FIR. When the half-order of 500 pm. the biggest factor may be refined 10, can still ensure the amplitude of the error within 1% accuracy,<a href="http://www.toryburchukshoes.com" target="_blank" class="postlink">tory burch London</a>, using two FIR filter is a multiple of the maximum fine of up to 2000 times. Dingkang References 1. Xie Ming complex analytic band-pass filter device and its contingent Demodulation Analysis in Vibration Engineering, 2000:13 (3): 3853922 Lu Wenxiang. Du Runsheng. Mechanical Engineering Test * information * signal analysis. Wuhan: Huazhong University Press, 19923 Li Fangze. Liu Qing Fu. WANG Zheng. Engineering Vibration Measurement and Analysis,<a href="http://www.abercrombieukhollister.com" target="_blank" class="postlink">abercrombie uk</a>, Beijing: Higher Education Press, 19924 Dingkangxieming other DAs dynamic signal analysis and fault diagnosis system of Vibration Engineering 1993; 6 (2): l99-2045 Dingkangxieming. discrete convolution spectrum amplitude correction Error analysis. Vibration Engineering, 1996; 9 (1): 929sPrincipleandMethodofMultipleModulationZoomSpectrumAnalysisBasedonMultipleAnalyticalBand-PassFilterDingKang (DepartmentofMechatronicEngineering-ShantouUniversityShantou, 515063) XieMingZhangBideZhaoLingZhangXiaofei (FacultyofAutomobile-ChongqingUniversityChongqing, 400044) a Yifan ix -= m a ¨ A man sprouts Yuk ~ ~ ~ <br /> <br />相关的主题文章： <br /> <br /> <br /> <a href="http://lofmfzfs.xanga.com/747231327/ed-hardy-danmark-postpress-finishing-the-latest-technology-s/" target="_blank" class="postlink">ed hardy danmark Postpress finishing the latest technology s</a> <br /> <br /> <a href="http://www.phpbb88.com/bnsa/viewtopic.php?p=16815&mforum=bnsa#16815" target="_blank" class="postlink">Franklin Marshall pas cher CIEC Exhibition Co., Lt</a> <br /> <br /> <a href="http://glizz.forumup.nl/viewtopic.php?p=108547&mforum=glizz#108547" target="_blank" class="postlink">gorras ed hardy Green Packaging Design Research _3</a></span></td> </tr> </table></td> </tr> <tr> <td colspan="2" height="1" class="spaceRow"><img src="http://picsrv.fora.pl/sky/images/spacer.gif" alt="" width="1" height="1" /></td> </tr> </table>
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