Latter half of this video is the sound stuff but with high enough frame rates we can convert very small (read "distant") motions into sound. Awesome when it comes to supporting the given reason why we have sound in space in Elite! 
http://www.ted.com/talks/michael_ru...nt_sounds_cool_creepy_we_can_t_decide#t-94346
http://www.ted.com/talks/michael_ru...nt_sounds_cool_creepy_we_can_t_decide#t-94346