Hey Erich, I don’t know if you saw my post — sorry to bother you but I am wondering you see anything wrong with the way I am calling sox here? > Hey Erich, > > Thanks again for the reply. Here is the call I use to generate file 92 for example: > > sox -V -t raw -r 11025 -e signed -b 8 -c 1 sound0000 -r 44100 sound92.wav vol 1 speed 0.93636363744736 pad 12.966666666667 10.966666666667 trim 0 13.033333333333 > > Here’s the result: > https://dl.dropboxusercontent.com/u/4215526/sound92.wav > > I don’t know if it could be part of the problem, but here is the source effect file “sound0000”, which is not a wav but just raw samples: > https://dl.dropboxusercontent.com/u/4215526/sound0000 Thanks! Bob