process external sounds in TR8 or TR09

[Mazata]

Hi folks,
I'm new to this forum and new to producing as well. This may sound like a stupid question, but is it possible to process/rework/modify and ultimately use an external sound into either of the TR09 or TR8? More precisely, can I record a sound (e.g. me hitting my head on a table) and send it into either of these machines and then assign it as say a Mid Tom and play around with it?
Thanks for your answers!