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Old 07-18-2007, 10:39 AM
Uri Uri is offline
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Join Date: Jul 2006
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psd normalization

I'm having problems with the psd resulting from spctrm.cpp function descrived in chapter 13.

I'd like to compare function's result with a matlab computed psd and, althougth psd trend is the same, it seems to be a multiplying factor there.

Of course I've tryed to divede both psd to obtain that factor, but it seems not that easy so I find out is not a constant at all.

Anyone may know what's happening?

Thanx

I attach figures obtained for a better undertanding.
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File Type: jpg comparision between both psd-s.jpg (33.0 KB, 1107 views)
File Type: jpg diference between psd-s.jpg (44.8 KB, 1082 views)
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Old 05-01-2011, 12:21 AM
juancmaya juancmaya is offline
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what frecuency have the signal

i have the same results for low frecuency , when i work with a sound signal sampled to 40khz i get only a peak when the p[j] graphic start, i have m=128 k=100 ovrloap=0, what do you think?

mayajuan2002@hotmail.com


Quote:
Originally Posted by Uri View Post
I'm having problems with the psd resulting from spctrm.cpp function descrived in chapter 13.

I'd like to compare function's result with a matlab computed psd and, althougth psd trend is the same, it seems to be a multiplying factor there.

Of course I've tryed to divede both psd to obtain that factor, but it seems not that easy so I find out is not a constant at all.

Anyone may know what's happening?

Thanx

I attach figures obtained for a better undertanding.
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