The Reference Curves package is an option in AudioTools that allows you to compare a stored plot to the live plot, generate an EQ curve, or set a +/- dB limit to test the live curve against. You can create the reference plot in a text editor, or from a saved AudioTools test. Reference Curves are available in RTA, FFT, Impulse Response, Smaart, and Transfer Function.The Reference Curves option may be purchased by tapping the Info button that covers the “Reference Curve” button on any of the supported modules. Once purchased, Reference Curves are then available in all of the supported modules.