hello julien, there are many different kinds of bells, but as peiman has already pointed out, the main characteristics are: 1. inharmonic spectra; 2. amplitude envelope with sharp attack and exponential decay; 3. higher partials decay faster than lower ones, producing a spectral envelope also with exponential decay. any sound with those characteristics will sound more or less like a "bell". i don't have Benade's book at hand, but i remember there was a chapter on bells, with the frequencies of a couple of bell spectra. in case it is of any use, i attach a csd file adapted from csound code written by andrew horner, based on the analysis of a traditional chinese bell. best, lj Send bugs reports to the Sourceforge bug tracker https://sourceforge.net/tracker/?group_id=81968&atid=564599 Discussions of bugs and features can be posted here To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"