Research On The Techniques Of Realistic Sound Synthesis For Interactive Fluids

Sound synthesis is one of the most important research fields in virtual reality.In the recently studies,it is possible to synthesize the real-time sound.However,most of the sound synthesized methods are focus on the sound generated by the object collision whereas less attention to the fluid sound especially the research on the interactive fluid sound.However,it is impossible to propose a common simulation method for all of the fluid sound due to the differences about physical and sound models among different fluid model.Consequently,we do research on the interactive sound synthesis of the fire and the water.Firstly,a new interactive fire sound synthesized method is proposed for different solid combustibles in our paper.For the synthesis of the fire interactive sound,the fire sound is synthesized at low and high frequency separately in most of the current fire sound synthesis methods.In most fire sound synthesis methods,direct combustion noise is used to synthesize low frequency sound while turbulence vortex is always ignored,because direct combustion noise is the main source of the fire sound.In high frequency fire sound,the constant frequency noise is used to simulate the high frequency fire sound,which makes the fire sounds be similar.For the two problems,we propose a novel fire sound synthesis method based on the high frequency blending clips matching method.What's more,a new method based on interactive features for the different solid combustibles is proposed according to the physical models of different solid combustibles and the real fire sound signals.We also solve the synchronized problem between the interactive sound with the high-low frequency fire sound to make our fire sound synchronize with the animation and make the fire sound of different solid combustibles be more discrimination.Secondly,we propose a new interactive water sound synthesized method for different solid materials.For the synthesis of the water interactive sound,the bubble harmonic method is used to simulate bubble sound in most methods.What' more,the shape and the position of the bubble are calculated to simulate the bubble sound,which will make enormous time consuming and the neglect of the collision between solid and fluid.For the two problems,we propose a novel water interactive sound method.In order to solve the time consuming problem,we create three different types of the bubble: bubble,foam and spray to synthesize the final bubble sound,which will decrease the synthesis time of bubble sound extremely.For the interactive problem between solid and fluid,the interactive sound generated by different materials and the water are introduced to the bubble sound to enhance the realistic of the water sound in different environment.