Posted by PTravel on 07/04/06 17:49

"David McCall" <david--------@techshop.net> wrote in message
news:ljwqg.22641$US2.7@trndny03...
> There is a possible audio analogy.
>
> Imagine recording of an orchestra with a couple
> very narrow notch filters, such that you only really
> hear the "pure" tone (no harmonics)of a C above C,
> and the F above that. the rest may be there but it is
> way down in the noise.
>
> What can you do to reconstruct the full orchestra?
> I don't think it is very likely.

The point, though, is that I'm not trying to reconstruct the orchestra.
Following your audio analogy, it would be like artificially adding harmonics
that were never there to begin with. It will never sound natural, but it
will offer more variety.


>
> There were some really nice spectrum charts offered.
> If you look through them you will find several flavors
> of sodium vapor lamps. Some have slightly better
> color rendering, but they probably sacrifice efficiency.
>
> David
>

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