For a while I've been using the sirlabs.de vocoder plugin: http://www.sirlab.de/linux/descr_vocoder.html But it has some problems, notably expecting two inputs but only offering one output. There was a patch on linuxrockstar which gave it two outputs, but something seemed a bit lacking, still. An evening of hacking and here we have it: http://www.gjcp.net/~gordonjcp/vocoder.tar.bz2 It's hard-set to eight bands, all with the same level. There's a bandspread control to alter the frequency spacing of the partials, and a width control to vary the stereo effect where odd bands go to the left output and even bands go to the right output. Give it a go and let me know how you get on. Gordon