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Re: question about FFT computation
From: |
Jörg Kampmann |
Subject: |
Re: question about FFT computation |
Date: |
Mon, 24 Jan 2005 12:22:40 +0100 |
"Jörg Kampmann" <address@hidden> schrieb am 24.01.05 11:58:15:
>
>
> "Cesare CRUCCAS" <address@hidden> schrieb am 24.01.05 09:23:21:
> >
> > Good morning Joerg,
> >
> > I've found your name in the mailing list of octave about FFT...
> >
> > I've need to make a FFT computation of a signal,
> > but with the particularity that the times aren't equidistants.
> >
> > I've two vectors of dimension N.
> > The first is the times (i.e. T=[0, 0.01, 0.04, ...])
> > and the second is another thing (i.e. Accel=[0, 4500, 4300, ...])
> >
> > Could You help me?
>
> thanks for the message, ad hoc I would say:
>
> Interpolate the signals (e.g. with bezier or any other interpolation). And
> make an equidistant sample series
> from that.
>
> When non-equidistancy is not that grave, i.e. when the sampling-points can be
> considered as statistically
> equidistant, you should try to leave it as is ...
>
> However if it is a real-time problem you possibly have to consider also these
> issues, maybe a RTOS like QNX
> www.qnx.com
>
>
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