[SciPy-User] Signal to noise ratio

[Warren Weckesser]

Nils Wagner wrote:
> Hi all,
>
> I have two questions concerning signal processing
>
> I have used scipy.stats.signaltonoise to compute the 
> signal-to-noise ratio.
> The value is 0.0447.
> How can I judge it ?
>
> How can I filter out high frequencies using scipy ?
>   

I posted an example low-pass filtering using 'butter' and 'lfilter' from 
scipy.signal here:

    http://mail.scipy.org/pipermail/scipy-user/2010-January/024032.html

Warren

> How can I eliminate noise from the signal ?
>
> Nils
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