[SciPy-user] Frequency content of a transient signal

Nils Wagner nwagner@iam.uni-stuttgart...
Tue Jul 22 07:14:43 CDT 2008


On Tue, 22 Jul 2008 13:59:39 +0200
  "Stéfan van der Walt" <stefan@sun.ac.za> wrote:
> 2008/7/22 Matthieu Brucher <matthieu.brucher@gmail.com>:
>> I think you can use a sliding DFT on your signal. This 
>>way, you will
>> get a moving estimation of the spectral information 
>>(it's a basic
>> time-frequency transform, before you use wavelets ;)).
> 
> Wavelets always sound like so much fun.  Attached, a 
>script to
> decompose the signal using pywt 
>(http://wavelets.scipy.org).
> 
> Regards
> Stéfan
  
Hi Stefan,

Thank you for your reply.
I have installed pywt and run your script. It looks 
impressive but how can I interprete the results ?

Regards,
              Nils


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