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FINAL COMMIT

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L. Dijk
2021-07-03 16:26:55 +02:00
parent 81686bbf0d
commit 0be926128f
18 changed files with 247 additions and 4092 deletions
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10
SpectralAnalysisGaitfunc.m
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@ -2,14 +2,18 @@ function [ResultStruct] = SpectralAnalysisGaitfunc(dataAccCut_filt,WindowLen,FS,
P=zeros(0,size(dataAccCut_filt,2));
for i=1:size(dataAccCut_filt,2)
for i=1:size(dataAccCut_filt,2) % pwelch = Welch’s power spectral density estimate
[P1,~] = pwelch(dataAccCut_filt(:,i),hamming(WindowLen),[],WindowLen,FS);
[P2,F] = pwelch(dataAccCut_filt(end:-1:1,i),hamming(WindowLen),[],WindowLen,FS);
[P2,F] = pwelch(dataAccCut_filt(end:-1:1,i),hamming(WindowLen),[],WindowLen,FS); % data
P(1:numel(P1),i) = (P1+P2)/2;
end
dF = F(2)-F(1);
dF = F(2)-F(1); % frequencies
% Calculate stride frequency and peak widths
[StrideFrequency, ~, PeakWidth, MeanNormalizedPeakWidth] = StrideFrequencyRispen(P,F);
[ResultStruct] = HarmonicityFrequency(dataAccCut_filt, P,F, StrideFrequency,dF,LowFrequentPowerThresholds,N_Harm,FS,AccVectorLen,ResultStruct);
ResultStruct.IH_VT = IndexOfHarmonicity(dataAccCut_filt(:,1),(5*StrideFrequency),10); % expect fmax at step frequency (2* stridefrequency), what happens if you increase fmax (~ PSD)
ResultStruct.IH_ML = IndexOfHarmonicity(dataAccCut_filt(:,2),(5*StrideFrequency),10); % expect fmax at stride frequency
ResultStruct.IH_AP = IndexOfHarmonicity(dataAccCut_filt(:,3),(5*StrideFrequency),10); % expect fmax at step frequency (2* stridefrequency)
end