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