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MessagePosté le: Lun 26 Sep - 11:57 (2016)    Sujet du message: Half Band Filter Pdf Free Répondre en citant




Half Band Filter Pdf Free > shorl.com/lynepibevesi

























































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Understanding,,,,Digital,,,,Signal,,,,Processing,,,,(3,,,,ed.).,,,,^,,Jovanovic-Dolecek,,,Gordana,,(2001-07-01).,,"5.4.1".,,,(2011-10-17).,,,,Your,,,browser,,,doesn't,,,accept,,,cookies.,,,Digital,,,,Signal,,,,Processing,,,,with,,,,Field,,,,Programmable,,,,Gate,,,,Arrays,,,,(3,,,,ed.).,,,,'Specification','Filter,,order,,and,,transition,,width',,,.,,As,,,,a,,,,simple,,,,example,,,,,consider,,,,a,,,,halfband,,,,filter,,,,whose,,,,dealing,,,,with,,,,data,,,,sampled,,,,at,,,,96,,,,kHz,,,,and,,,,a,,,,passband,,,,frequency,,,,of,,,,22,,,,kHz.Fs,,,,=,,,,96e3;,,,,Fp,,,,=,,,,22e3;,,,,N,,,,=,,,,100;,,,,num,,,,=,,,,firhalfband(N,Fp/(Fs/2));,,,,fvt,,,,=,,,,fvtool(num,'Fs',Fs,'Color','white');,,,,fvt.MagnitudeDisplay,,,,=,,,,'Zero-phase';,,,,By,,,,zooming,,,,in,,,,to,,,,the,,,,response,,,,,you,,,,can,,,,verify,,,,that,,,,the,,,,passband,,,,and,,,,stopband,,,,peak-to-peak,,,,ripples,,,,are,,,,the,,,,same.,,,,

pylab,,,is,,,a,,,wrapper,,,around,,,lower-level,,,#,,,MPL,,,artist,,,(pyplot),,,functions.,,,'StopbandShape','linear','StopbandDecay',53.333,'SystemObject',true);,,,fvt,,,=,,,fvtool(equirippleHBFilter1,equirippleHBFilter2,,,,.,,,fig,,=,,mpl.pyplot.figure(),,ax0,,=,,fig.addsubplot(211),,ax0.stem(numpy.arange(len(h)),,,h),,ax0.grid(True),,ax0.settitle('Parks-McClellan,,(remez),,Impulse,,Response'),,ax1,,=,,fig.addsubplot(212),,ax1.stem(numpy.arange(len(b)),,,b),,ax1.settitle('Windowed,,Frequency,,Sampling,,(firwin),,Impulse,,Response'),,ax1.grid(True),,fig.savefig('hbimp.png'),,fig,,=,,mpl.pyplot.figure(),,ax1,,=,,fig.addsubplot(111),,ax1.plot(w,,,20*log10(abs(H))),,ax1.plot(w,,,20*log10(abs(Hb))),,ax1.legend(['remez',,,'firwin']),,bx,,=,,bands*2*pi,,ax1.axvspan(bx[1],,,bx[2],,,facecolor='0.5',,,alpha='0.33'),,ax1.plot(pi/2,,,-6,,,'go'),,ax1.axvline(pi/2,,,color='g',,,linestyle='--'),,ax1.axis([0,pi,-64,3]),,ax1.grid('on'),,ax1.setylabel('Magnitude,,(dB)'),,ax1.setxlabel('Normalized,,Frequency,,(radians)'),,ax1.settitle('Half,,Band,,Filter,,Frequency,,Response'),,fig.savefig('hbrsp.png').,,'Input,,Signal,,and,,Output,,Signal,,of,,Quadrature,,Mirror,,Filter');,,scope.ChannelNames,,=,,{'Input','Output'};,,tic,,while,,toc,,<,,10,,Input,,=,,sum(InputWave(),2);,,NoisyInput,,=,,Input+(10^-5)*randn(1024,1);,,[Lowpass,Highpass],,=,,halfbandDecimator(NoisyInput);,,Output,,=,,halfbandInterpolator(Lowpass,Highpass);,,scope([NoisyInput,Output]);,,end,,Advanced,,Design,,Options:,,Specifying,,Different,,Design,,AlgorithmsAll,,designs,,presented,,so,,far,,have,,been,,optimal,,equiripple,,designs.,,'SamplesPerFrame',FrameSize);,,tic,,while,,toc,,<,,10,,x,,=,,sine1(),,+,,sine2(),,+,,0.01.*randn(FrameSize,1);,,%,,96,,kHz,,y,,=,,halfbandInterpolator(x);,,%,,192,,kHz,,xd,,=,,halfbandDecimator(y);,,%,,96,,kHz,,scope(xd);,,end,,Obtaining,,the,,Filter,,CoefficientsThe,,filter,,coefficients,,can,,be,,extracted,,from,,the,,interpolator/decimator,,by,,using,,the,,tf,,function.num,,=,,tf(halfbandInterpolator);,,%,,Or,,num,,=,,tf(halfbandDecimator);,,Using,,Different,,Design,,SpecificationsInstead,,of,,specifying,,the,,filter,,order,,and,,transition,,width,,,you,,can,,design,,a,,minimum-order,,filter,,that,,provides,,a,,given,,transition,,width,,as,,well,,as,,a,,given,,stopband,,attenuation.Ast,,=,,80;,,%,,80,,dB,,halfbandInterpolator,,=,,dsp.FIRHalfbandInterpolator('SampleRate',Fs,,,.,,p.274.,,,Compensating,,,for,,,the,,,group-delay,,,in,,,the,,,filter,,,,it,,,is,,,possible,,,to,,,plot,,,the,,,input,,,and,,,interpolated,,,samples,,,overlaid.,,,ISBN9781461401124.,,,

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