maximal hearable speed of pulses

[Len Vrijders <len.vrijders@xxxxxxxx>]

Hello everyone,


I am looking for any results on experiments that give a minimal time between events so that the human ear can still hear two sperate 
events.
At an interval of 50ms, people hear a tone instead of sperate beats, maybe that is common knowledge but I would like to read a bit 
more on the subject.

People seem to be very interested in investigating the frequencies we can hear, and I can find many articles dealing with this 
subject, but I would like to know more about the hearable speed of pulses, e.g. when does fast tapping on a snaredrum become a 
drumroll...

Does anyone know any articles on this matter or is maybe currently involved in any research around the subject?


Thanks in advance,
-Len