Alex,
> I am using (trying to...) PGSQL to store a database of
> digital signals. Each signal is a sequence of (signal_id,
> timestamp, double) tuples. I've managed to write resampling
> alogrithms in pl/pgsql, and I don't think it would be hard
> to write autoregressive filters. However, now I'm confronted
> with the need to compute the power spectra of my signals. I
> would like to use FFTW, which is lightning fast on my
> machine. Has anyone already written FFTW bindings for
> PostgreSQL?
I you don't get an answer here, try posting to pgsql-hackers mailing list.
--
-Josh Berkus
Aglio Database Solutions
San Francisco