That depends on the conference. One way you can get around that... if the conference gives out a CD or anything, you can put a more "verbose" slide deck on the

That depends on the conference. One way you can get around that... if the conference gives out a CD or anything, you can put a more "verbose" slide deck on the conference CD and suggest that people who are non-native speakers can load up the CD and follow along on their laptop. The verbose version is also useful for people to download who cannot make the talk, especially if they are reading it in an environment where they can't listen to audio.