e@35: footstep01 is taken from https://freesound.org/people/Samulis/sounds/197778/ (user Samulis) and converted to mono
e@35: footstep02 is a copy of footstep01 with a frequency shift to lower frequencies.
e@35: 
e@35: The rest are taken from the original simscene ( https://bitbucket.org/mlagrange/simscene )