MATLAB爱好者论坛-LabFans.com - 查看单个帖子 - Spectral Centroid - get the same results in matlab and python

poster · 2019-11-25, 00:00

I obtain spectral centroid in matlab using this code:

Fs = 200

v = [0.79230, 0.28280, 0.63000, 0.64140, 0.76430, 0.25560, 0.27780, 0.73330, 0.48960, 0.01990];



s = spectrogram(v,  rectwin(round(Fs*0.03)),...

                    round(Fs*0.02),...

                    numel(rectwin(round(Fs*0.03))),...

                    Fs,...

                    'power',...

                    'onesided');



X = abs(sqrt(s/2));

centroid = spectralCentroid(v,Fs,'Window',rectwin(round(Fs*0.03)),...

                                'OverlapLength',round(Fs*0.02),...

                                'FFTLength',numel(rectwin(round(Fs*0.03))),...

                                'Range',[0, Fs/2],...

                                'SpectrumType','power')

vsc = FeatureSpectralCentroid (X, Fs)

Function FeatureSpectralCentroid I have from this link: https://www.audiocontentanalysis.org/code/audio-features/spectral-centroid/

The results are: centroid = [10.6816, 6.0146, 19.6662] and vsc = [40.4499, 27.4300, 41.0146]
I also use a different implementation of spectral centroid and the results are also different. Sometimes scalar, not vector. How to use FeatureSpectralCentroid to get the same results as in spectralCentroid? Can we always get the same results of spectral centroid?

More...

2019-11-25, 00:00	#1
poster 高级会员注册日期: 2019-11-21 帖子: 3,006 声望力: 66	Spectral Centroid - get the same results in matlab and python I obtain spectral centroid in matlab using this code: `Fs = 200 v = [0.79230, 0.28280, 0.63000, 0.64140, 0.76430, 0.25560, 0.27780, 0.73330, 0.48960, 0.01990]; s = spectrogram(v, rectwin(round(Fs0.03)),... round(Fs0.02),... numel(rectwin(round(Fs0.03))),... Fs,... 'power',... 'onesided'); X = abs(sqrt(s/2)); centroid = spectralCentroid(v,Fs,'Window',rectwin(round(Fs0.03)),... 'OverlapLength',round(Fs0.02),... 'FFTLength',numel(rectwin(round(Fs0.03))),... 'Range',[0, Fs/2],... 'SpectrumType','power') vsc = FeatureSpectralCentroid (X, Fs)` Function `FeatureSpectralCentroid` I have from this link: https://www.audiocontentanalysis.org/code/audio-features/spectral-centroid/ The results are: `centroid = [10.6816, 6.0146, 19.6662]` and `vsc = [40.4499, 27.4300, 41.0146]` I also use a different implementation of spectral centroid and the results are also different. Sometimes scalar, not vector. How to use `FeatureSpectralCentroid` to get the same results as in `spectralCentroid`? Can we always get the same results of spectral centroid? More...