logarithmic power spectra looks ridiculously high

Hello,

I was reading this paper (http://www.kecl.ntt.co.jp/icl/signal/
nakatani/papers/icslp2002f0.pdf) and thought his Power spectra looks
ridiculously high.

using 10*log10(S) for the log power of spectrum S, S would need to be
about 10^9 to get that high dB range.

Or is there some standard that I'm unaware of?

In my matlab code, 10*log10(S./min(S)) gives a similar sized spectrum
as long as min(S) is not zero of course.


Any clarification would really be appreciated,

 Adam

On Feb 6, 9:45&#4294967295;pm, adamchapman <adamchapman1...@hotmail.co.uk> wrote:
> Hello,
>
> I was reading this paper (http://www.kecl.ntt.co.jp/icl/signal/
> nakatani/papers/icslp2002f0.pdf) and thought his Power spectra looks
> ridiculously high.
>
> using 10*log10(S) for the log power of spectrum S, S would need to be
> about 10^9 to get that high dB range.
>
> Or is there some standard that I'm unaware of?
>
> In my matlab code, 10*log10(S./min(S)) gives a similar sized spectrum
> as long as min(S) is not zero of course.
>
> Any clarification would really be appreciated,
>
> &#4294967295;Adam

Sorry I should have noted that Im looking at the second row of plots
in figure 2 of the linked paper.