A Finite Element Model of the Human Head for Simulation of Bone-conducted Sound

.......................................................................................................... 1 LIST OF PAPERS .................................................................................................. 3 INTRODUCTION .................................................................................................. 5 Background of bone-conducted sound ............................................................ 5 Introduction of the model ................................................................................ 6 MODELING AND VALIDATION ....................................................................... 9 The first model: Dry skull model (Paper I)..................................................... 9 Modeling .................................................................................................. 10 Validation and Results ............................................................................. 10 The second model: Whole head model (LiUHead) (Paper II) ...................... 12 Modeling .................................................................................................. 13 Validation and Results ............................................................................. 15 INVESTIGATIONS USING THE LIUHEAD .................................................... 19 Power distribution and transmission (Paper III) ........................................... 19 Settings .................................................................................................... 19 Results and conclusion ............................................................................ 21 Characteristics of Bone-conduction Devices (Paper IV) .............................. 23 Settings .................................................................................................... 24 Results and conclusion ............................................................................ 25 CONCLUSION .................................................................................................... 29 Summary ........................................................................................................ 29 Future Research ............................................................................................. 30 Effect of the skin/soft tissue thickness and transducer attachments area 30 Transcranial attenuation and time delay ................................................ 31 Detailed inner ear ................................................................................... 32 ACKNOWLEDGEMENTS ................................................................................. 35 REFERENCES ..................................................................................................... 37