2008/12/1 basshead6949 : > > Thanks for the speed reply guys. I was already previously aware of the many > reverb opcodes (not heard of screverb though so thanks for the tip!) but in > actual fact, yes I do have to build it myself so using reverb opcodes is not > an option. There's no real strict specification on what I can use, just > those that I can't. From what know, I just assumed a variable delay would > be the best option. Any more ideas? You can build screverb using Csound primitives. The code is out there somewhere ... maybe in the UDO archive. Allpass filters are also nice. Graham