But , wait a minute , P - file for each frame is storing a vector of cepstral or PLP values ,
It 's whatever you want , actually.
right ? Right.
So that  what 's nice about the P - file  It  i Built into it is the concept of  frames , utterances , sentences , that sort of thing , that structure. And then also attached to it is an arbitrary vector of values. And it can take different types.