Re: Blackman Harris Window ----- Confused

[Francesco Potortì]

>I have a time series of a few hundred values, which I've detrended.
>
>I need to calculate a single sided spectral density function, using a
>blackman harris window.  
>
>I require a frequency resolution of 1/64 Hz, with a maximum of 4Hz,
>resulting in a spectrum of 256 lines.
>
>How do I go about doing this?  I've done a lot of googling on this and the
>explinations on the method on doing this is still a little confusing.  Any
>help whatsoever would be much appreciated.

Use 'pwelch', from the 'signal' package.

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