Excel's Fourier Analysis (FFT) Add-In is very useful, except that the user
must manually run it each time the input column's data changes in order to
see the new output data. Why not make this a function, so that FFT results
are updated automatically whenever the input is changed?

I'd love to see, for example, "FFT" and "IFFT" (inverse FFT) functions in a
future version of Excel.

Presumably you intended to send this suggestion to Microsoft rather than
to other users who have no power to act on it. This is a peer-to-peer
newsgroup. Try
http://register.microsoft.com/mswish/suggestion.asp
instead.

Jerry

BobM wrote:

Excel's Fourier Analysis (FFT) Add-In is very useful, except that the user
must manually run it each time the input column's data changes in order to
see the new output data. Why not make this a function, so that FFT results
are updated automatically whenever the input is changed?

I'd love to see, for example, "FFT" and "IFFT" (inverse FFT) functions in a
future version of Excel.

Thanks, Jerry. I've now submitted it via that web site.

"Jerry W. Lewis" wrote:

Presumably you intended to send this suggestion to Microsoft rather than
to other users who have no power to act on it. This is a peer-to-peer
newsgroup. Try
http://register.microsoft.com/mswish/suggestion.asp
instead.

Jerry

Bob. I have a Radix-2 Fourier Transform vba function. However, I wrote it
using vba's full 28 digit precision. (Variant arrays). I plan to re-write
it using double precision. However, I've been testing different ideas for
speed and haven't quite finished it yet. Give me a few weeks to finish it.
If you drop me a note with your email address, I'll send you an update when
ready.

--
Dana DeLouis
Win XP & Office 2003


"BobM" wrote in message
...
Thanks, Jerry. I've now submitted it via that web site.

"Jerry W. Lewis" wrote:

Presumably you intended to send this suggestion to Microsoft rather than
to other users who have no power to act on it. This is a peer-to-peer
newsgroup. Try
http://register.microsoft.com/mswish/suggestion.asp
instead.

Jerry

"BobM" wrote:

Excel's Fourier Analysis (FFT) Add-In is very useful, except that the user
must manually run it each time the input column's data changes in order to
see the new output data. Why not make this a function, so that FFT results
are updated automatically whenever the input is changed?

I'd love to see, for example, "FFT" and "IFFT" (inverse FFT) functions in a
future version of Excel.

Bob, How can I use the Excel's Fourier Analysis (FFT) Add-in? Could you,
please, hemp me on that? I want to make the FFT of a signal that's in a
clolumn of an excel file. How I can do?

Please, answer me...
Many thanks in advance for your courtesy.
With my best whises and best regards,
Sandro