Hi everybody! I'm trying to mix two sources : A noise, and the output of a FAUST instrument ; I have been following the "One voice mixer" tutorial <https://www.youtube.com/watch?v=kTN-ZAEdYD4> : gate = button("gate"); // 0/1 env = gate : hgroup("Noise Env", adsr(a, d, s, r)); noize = env * noise; kick = additiveDrum(freq,ratio,gain,5,attack,release,gate); mute1 = *(1-checkbox("Mute1")); mute2 = *(1-checkbox("Mute2")); amplify1 = *(hslider("Gain1", 0.5,0,1,0.01)); amplify2 = *(hslider("Gain2", 0.5,0,1,0.01)); pano1 = _ <: *(p1),*(1-p1) with { p1 = nentry("[1]Pano1[style:knob]",0.5,0,1,0.1); }; pano2 = _ <: *(p2),*(1-p2) with { p2 = nentry("[2]Pano2[style:knob]",0.5,0,1,0.1); }; process = hgroup("Noize", noize : mute1 : amplify1 ),hgroup("Kick", kick : mute2 : amplify2); The above code is "Faust code OK" in FaustWorks ; This is really prototype code, I purposely duplicated stuff to be dead sure that I'm using separate objects, please forget its crudeness anyway, here is the diagram <https://framapic.org/TVHGMH480G53/3M7B4nBn3Dxf.png> : It really looks like we should hear both sources together, right? Wrong :( See if I leave only one of them two, say "hgroup("Noize", noize : mute1 : amplify1)" alone, /then/ I can hear it, same for "hgroup("Kick", kick : mute2 : amplify2)" :( I tried everything, like mixing them down to simple stereo (:>_,_) or using various blocks and combinations, no-way, I'm really missing something... What? Thank you for your patience, Faust is fantastic BTW yPhil -- Yassin Philip New album NOW http://yassinphilip.bitbucket.io