I've seen high-speed videos shot with multi-thousand fps cameras, and the ones that have sound have slow motion sound. I want to know how to film this slow motion sound. For a good example of exactly what I mean, watch mythbusters, they do slow motion footage with sound all the time. I've tried just recording a regular sound and stretching it in a program like Vegas, but then it gets all distorted and...idk how to explain how it gets, here's an example: Normal: http://infectionist.com/misc/odst_egg-hitchhikers.mp3 Stretched (x2): http://infectionist.com/misc/odst_egg-hitchhikers_stretch.mp3 Notice the echo? That happens, and that's only when I stretch it to x2, high-speed cameras film at many many times normal NTSC framerates. Does anyone know a way I can record at higher...framerates? I'm not sure if that's what you would call it when referring to audio, but you should know what I mean.