We are learning about Click Tracks at school this semester and how the "Click Track" books work .
Those books have hundreds of pages with corresponding times for each click on different tempos so you can plan direct hits in the soundtrack .
For example : A crochet at 80.7 tempo is exactly 1.1 seconds ( or something like that ) . That way you would have a bar and a crochet so the direct hit comes on spot .
I am wondering if they still use those books in Film Making since everything tends to be digital and frame perfect today .
What do you guys know about this thing generally , have you ever used them ?