[SciPy-User] Signal to noise ratio
Wed Mar 3 20:20:32 CST 2010
thanks for this example!
I am getting the following error:
BadCoefficients: Badly conditionned filter coefficients (numerator): the
results may be meaningless
"results may be meaningless", BadCoefficients)
For any attempt to filter a low-pass below 12 Hz in this example (so - I
don't get the plot you got - instead I get a flat line on the bottom
subplot). Do you (or anyone?) have any idea why that is?
On Wed, Feb 24, 2010 at 7:51 AM, 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:
> > How can I eliminate noise from the signal ?
> > Nils
> > _______________________________________________
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> > SciPy-User@scipy.org
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Helen Wills Neuroscience Institute
University of California, Berkeley
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