Dear Jiajun,
I am not sure the web page referenced them, but what comes to mind, among others, is the work of Clara Suied et al. on this topic, e.g.:
@article{suied2010natural,
title={Why are natural sounds detected faster than pips?},
author={Suied, Clara and Susini, Patrick and McAdams, Stephen and Patterson, Roy D},
journal={The Journal of the Acoustical Society of America},
volume={127},
pages={EL105--EL110},
year={2010},
}
@article{agus2012fast,
title={Fast recognition of musical sounds based on timbre},
author={Agus, Trevor R and Suied, Clara and Thorpe, Simon J and Pressnitzer, Daniel},
journal={The Journal of the Acoustical Society of America},
volume={131},
pages={4124--4133},
year={2012},
}
@article{suied2014auditory,
title={Auditory gist: Recognition of very short sounds from timbre cues},
author={Suied, Clara and Agus, Trevor R and Thorpe, Simon J and Mesgarani, Nima and Pressnitzer, Daniel},
journal={The Journal of the Acoustical Society of America},
volume={135},
pages={1380--1391},
year={2014},
}
Best,
Bruno