It sounds like you would want to use the phase vocoder options in Csound.
I'm not sure if this is exactly what you were asking about, but
 I know that you can use pvanal, I use MacCsound exclusively, so my methods
are fairly specific, but if you open a soundfile with MacCsound, there is a
pulldown menu where you can select "frequency analysis" (pvanal)  this gives
you a data file that has the seperate frequencies and their relative
amplitude.
I have used the pvread opcode then to get information about a single
frequency bin from this file, which could be used as a control signal,
perhaps the amplitude of the output of a bandpass filter on a different
signal, or resynthesized with a bank of oscil 's

Perry Cook's book "Real sound synthesis for interactive applications" has
some good information on physical modeling of vibraphone and other struck
sounds


A
On 12/24/05, marcelo <mcond@terra.com.br> wrote:
>
>  Hi. Hope all of you are fine. My question is about instrumentral spectrum
> in csound. Is possible to build, perhaps in gen10, some instrumental
> spectrum, apart the amp env wich should be made in orc file. I know there is
> many physical model opcodes to do this, but all is based in real play, then
> we have options like hardness of the strike, where the block is hit... But
> my intention is to see every partial of some spectra and handing it do the
> sound that i want. My first interest is the vibraphone. Is there any work in
> this tread? Sites, papers, ... about this will be wellcome. Thanks a lot.
>
>    Marcelo
>