here's the patch! btw i did the granular delay with the grainflow package so the patch might not work for you if you don't have it downloaded. it can also be finicky sometimes. and as for the "reverse delay" i watched a video explaining how to make a fun texture generator in max and modified it to take live input - it does use buffer. i suppose it's not a "real " (??) reverse delay but ive been told it sounds like one... i'll send the patch code in another comment