That sometimes happens and I don’t know why. Most of the time normalizing works but sometimes the audio disappears.
Normalizing really isn’t very good anyway. All it will do is take your LOUDEST point and raise that to the specified level. Have one cough or loud noise and it’s been rendered useless anyway. I prefer your solution of using a volume envelope instead.
If you really want to normalize, try using Sound Forge instead. It can do the job much better with more options.
Edward Troxel
