I could call them: LowPassFilter, BandPassFIlter, etc. or Filter_LowPass, Filter_BandPass, etc. Strong preference for the latter - easy to spot in code! Nick -------------- next part -------------- An HTML attachment was scrubbed... URL: http://music.columbia.edu/pipermail/jsyn/attachments/20010305/bc5e4c88/attachment-0002.htm