Siri voice command system was ported from iPhone 4S to iPhone 4 (video)

Developer Steven Troughton-Smith has successfully ported the iPhone 4S Siri voice command system to the iPhone 4. Troughton-Smith was able to get the beginning steps of a full port. Take a look at the video:

As you may notice Siri works on the iPhone 4, but not as fast as on iPhone 4S. To increase the speed a special GPU driver for iPhone 4 is needed, which is not included in Siri app files.