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文件名称:Desktop

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小波降噪、时频分析等方法,系统地研究航天电子设备多余物噪声检测过程中各操作变量和微粒物理参数对声波频谱的影响。通过单因素试验,详细分析了微粒粒径、振动力学条件中加速度和频率等3因素对声音信号频谱分布的影响规律,比较了短时傅里叶变换和小波变换的特点。该结果为进一步识别多余物微粒的参数提供了指导依据(the complexity of the material interaction and the properties of the particles themselves make the received signal difficult to analyse. This paper based on particle collision sound wave mechanism, using the methods of wavelet de-noising, time-frequency analysis and so on, this paper systematically studies the influence of various operating variables and particle physics parameters on the sound spectrum in the process of detecting the noise of aerospace electronic equipment. Through the single factor test, the influences of the three factors such as acceleration and frequency on the spectral distribution of the sound signal are analyse in detail, and the characteristics of the short-time Fourier transform and the wavelet transform are compared. The result provides a guideline for further identification of the parameters of the extraneous particles.)
相关搜索: 短时傅里叶变换

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文件名大小更新时间
tftoolbox\altes.m 1913 1998-04-13
tftoolbox\ambifunb.m 2253 1998-04-13
tftoolbox\ambifuwb.m 4821 1998-05-19
tftoolbox\amexpo1s.m 1124 1998-04-13
tftoolbox\amexpo2s.m 1132 1998-04-13
tftoolbox\amgauss.m 1158 1998-04-13
tftoolbox\amrect.m 1105 1998-04-13
tftoolbox\amtriang.m 1138 1998-04-13
tftoolbox\anaask.m 1475 1998-06-12
tftoolbox\anabpsk.m 1564 1998-06-12
tftoolbox\anafsk.m 1604 1998-06-12
tftoolbox\anapulse.m 901 1998-04-13
tftoolbox\anaqpsk.m 1721 1999-10-26
tftoolbox\anasing.m 1382 1998-04-13
tftoolbox\anastep.m 905 1998-04-13
tftoolbox\ATOMS.M 5491 1998-05-19
tftoolbox\bat.mat 561812 1998-04-13
tftoolbox\contents.m 7414 2001-12-12
tftoolbox\contwtgn.m 3093 2000-02-21
tftoolbox\contwtgnmir.m 1976 2000-02-21
tftoolbox\correlmx.m 1530 1999-06-16
tftoolbox\correlmx.tex 3138 1999-06-16
tftoolbox\d2statio.m 766 1998-04-13
tftoolbox\demotfrparam.m 988 1999-04-19
tftoolbox\disprog.m 896 1998-04-13
tftoolbox\divider.m 638 2001-01-02
tftoolbox\dopnoise.m 1934 1998-04-13
tftoolbox\doppler.m 2184 1998-04-13
tftoolbox\dwindow.m 819 2001-11-29
tftoolbox\fmconst.m 1393 1998-05-14
tftoolbox\fmhyp.m 2393 1998-04-13
tftoolbox\fmlin.m 1545 1998-05-19
tftoolbox\fmodany.m 1308 1998-04-13
tftoolbox\fmpar.m 2588 1998-04-13
tftoolbox\fmpower.m 2498 1998-04-13
tftoolbox\fmsin.m 2686 1998-05-14
tftoolbox\fmt.m 3824 2001-12-31
tftoolbox\friedman.m 2335 2001-11-26
tftoolbox\gabor.mat 348866 1998-04-13
tftoolbox\gaussn.m 1601 2000-02-21
tftoolbox\gdpower.m 1798 1998-04-13
tftoolbox\griffitc.m 1243 1998-04-13
tftoolbox\holder.m 2881 2001-12-31
tftoolbox\htl.m 2807 1998-04-13
tftoolbox\if2phase.m 253 1998-04-13
tftoolbox\ifestar2.m 2738 1998-04-13
tftoolbox\ifmt.m 1998 1998-04-13
tftoolbox\imextrac.m 1876 1999-10-26
tftoolbox\instfreq.m 2931 1999-10-29
tftoolbox\integ.m 1100 1998-04-13
tftoolbox\integ2d.m 1414 1998-04-13
tftoolbox\istfr1.m 1042 1998-05-06
tftoolbox\istfr2.m 1225 2001-12-31
tftoolbox\istfraff.m 717 1998-05-19
tftoolbox\izak.m 818 1998-04-13
tftoolbox\kaytth.m 540 1998-04-13
tftoolbox\klauder.m 1330 1998-04-13
tftoolbox\lambdak.m 1115 1998-04-13
tftoolbox\layoutst.m 978 1998-05-06
tftoolbox\locfreq.m 937 1998-04-13
tftoolbox\loctime.m 810 1998-04-13
tftoolbox\margtfr.m 1242 1998-04-13
tftoolbox\mexhat.m 933 1998-04-13
tftoolbox\midscomp.m 2503 1998-04-13
tftoolbox\modulo.m 651 1998-04-13
tftoolbox\momftfr.m 1496 1998-04-13
tftoolbox\momttfr.m 3313 1998-04-13
tftoolbox\moon.m 1310 1999-11-22
tftoolbox\moon.mat 7149312 1999-11-22
tftoolbox\movcw4at.m 1660 2001-11-12
tftoolbox\movcw4at.mat 34816 1998-04-13
tftoolbox\movpwdph.m 1998 1998-04-13
tftoolbox\movpwjph.m 2093 1998-04-13
tftoolbox\movsc2wv.m 1888 1998-05-19
tftoolbox\movsp2wv.m 1912 2001-11-12
tftoolbox\movwv2at.m 1222 1998-04-13
tftoolbox\my.asv 619 2007-05-27
tftoolbox\my.m 591 2007-05-27
tftoolbox\noisecg.m 2195 1998-04-13
tftoolbox\noisecu.m 1284 1999-11-16
tftoolbox\odd.m 998 1998-04-13
tftoolbox\parafrep.m 2384 1999-04-19
tftoolbox\parafrep.tex 2022 1999-06-16
tftoolbox\paramfun.m 2985 2001-05-25
tftoolbox\PARAMFUN.MAT 1208363 1996-10-01
tftoolbox\paramtfr.ps 111846 1999-06-16
tftoolbox\paramtfr.tex 6251 1999-06-16
tftoolbox\plotifl.m 2552 1998-05-14
tftoolbox\plotsid.m 2659 1998-05-19
tftoolbox\pwvmovie.m 1518 1999-10-26
tftoolbox\readme.txt 3021 2005-06-19
tftoolbox\renyi.m 1851 1998-04-13
tftoolbox\ridges.m 3317 2001-12-31
tftoolbox\scale.m 4291 1998-04-13
tftoolbox\sgrpdlay.m 1828 1998-04-13
tftoolbox\sigmerge.m 1346 1998-04-13
tftoolbox\tfdemo.m 840 2001-04-25
tftoolbox\tfdemo1.m 5701 2001-11-12
tftoolbox\tfdemo2.m 9583 1998-05-14
tftoolbox\tfdemo3.m 9922 2001-11-12

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