- - Created through FAIR USE for educational purposes - - STS-121
You need a sound system with a lot of power and a great sub (turned up to house shaking level) to get the right effect of this video. I made this for all the people who dreamed of seeing a launch in person but were never able to make the trip themselves.

Using dozens of different video sources and countless audio versions of Shuttle launches I mixed this little clip together to mimic as close an experience to the real thing as I could. I know that the exact sequence of countdown events is somewhat compressed and not time-accurate but I was going more for the 'feel' of a high energy launch experience rather than a technical documentary. Throttle Up and SRB Separation are sounds as might be heard from onboard acoustic transducers picking up resonant vibration in the vehicle's structure.