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Cornell team figures out how to simulate cloth sounds using physics

first_imgComputer animation continues to develop at a staggering rate to the point where you really can’t tell what’s real or not in movies anymore. But while realistic motion and graphics are now becoming the norm, other areas of simulation still lag behind. One of those areas is audio, and in particular simulating different sound effects of complex objects/materials.In a lot of cases a sound is recorded and matched to an animation after it is created in a process done by hand, but it would be much faster if a computer could simulate the required audio. A team of researchers at Cornell University is tackling one such simulation. They have developed a process that manages to realistically simulate the sound of moving cloth.So how do you simulate cloth sounds? Physics. The team used the friction and crumpling movement of cloth to approximate what sounds are required through a sequence of actions. That data is then broken down into “microsecond chunks” in order to have sound snippets matched to it more precisely.The sounds are produced by hand, first by recording cloth being crumpled, then by spinning a piece of cloth off of a cloth roller. Those sounds are also broken down into chunks allowing them to be matched to the appropriate physics gathered from the animation data using best approximation.The end result, as the video above demonstrates, is pretty realistic cloth sound simulation. There’s still human input required to select the closest type of fabric (cotton, polyester, etc.) to what is being animated, and therefore the right database of sounds to use, but it sure beats doing it by hand every time.The Cornell solution proves the concept works, but is nowhere near ready for use in a real project. For that to happen a much larger database of sounds needs to be compiled and the algorithms used need to be improved and sped up to be as close to real-time as possible.Read more at Cornell ChronicleOnlinelast_img read more