convolution algorithm?

[klara]

Hi,

Can anybody tell me what algorithm is used by the Labview convolution function? I got it to work ok 🙂 but would now like to write the work up with it in and need a decent reference if possible.

Cheers,

klara

[altenbach]

Just right-click on the convolution node and select "help". The LabVIEW online help describes the function details and even gives the formula. 🙂

[klara]

Thanks for the speedy reply, but I already tried that. You're right, there is an equation in the help pages, but I was hoping to find out a little more detail on the algorithm used. Something like this

http://www.library.cornell.edu/nr/bookcpdf/c13-1.pdf

which described how exactly the Labview convolution function works, would be great!

[altenbach]

Well, convolution is a basic operation with defined behavior, the outcome should not depend on the details of the algorithm implementation ;). Most likely the NI implementation is highly optimized for speed and memory use and might not be public. It does not really matter.

Any math text (such as your link) should provide everything you need to use the convolution. 🙂

(Analogy: If you divide two numbers, you don't need to explain long division in three paragraphs ... ;))

[Nzmonzmp]

Hi,

What is the size of the output ?

This is not explain in the help node 😉

Thx