You could bury a triangle underground. This might work too, but it's probably safer to use a hidden triangle.
JM1
1.000000 0.500000 0.2500000 0.2500000 0.2500000
0 0
(Sorry, missed this one in my last post.)
Duckstream wrote:would it be possible to set two amplitude setups? both to set the "echo coming from the end of a pipe" and "echo bouncing off of a wall" ?
thanks for reply still, i really want to learn how to make proper sounds, i got an nice rev sound, idle is fine but the part between idle and reving is horrible (too low i think)
It wouldn't be that hard to do. Now that I think about it, the original non negative two stroke reverb amplitude I had was probably done to model the sound wave bouncing off the back cone of the expansion chamber. After that it should have the negative reflection off the end of the pipe. So you're right, it would be useful to have both.