Pro Tools writes a maximum density of automation data during an automation pass in the form of breakpoints. Since Pro Tools creates ramps between breakpoints, it may not need all of the captured points to create a sonically accurate representation of the automation moves that you have made. Each breakpoint takes up space in memory allocated for automation, so thinning data by removing unneeded breakpoints can maximize system efficiency and performance.
Pro Tools provides two different ways to thin automation data: automatically with the
Smooth and Thin Data After Pass option and manually with the
Thin Automation commands.