Chapter 10 Limitations to design predictions Measuring techniques for the evaluation of room performance. Modelling techniques for the prediction of room performance. The strengths and weak- nesses of different approaches. 10.1 Room responses Much of the space in this book could have been filled up with corresponding plots of the reverberation times (RT 60 ) and the energy/time curves for each of the rooms discussed and for each of the photographs shown. The `waterfall' plots for each room could also have been discussed, and indeed, many people