Raw vibration signals are curves that vibrate as a function of time. Cinemachine provides two types of raw signal Asset:
A 6D (x, y, z, pitch, roll, and yaw) noise profile. See Using Noise Profiles for details.
A 3D Fixed Signal. See Using Fixed Signals for details.
Usually these raw signals are Assets in the Project.
In the Impulse Source Inspector window, use the Raw Signal field to see which signal is connected to the Impulse Source. The Settings menu (indicated with a gear icon) next to the field provides options for working with raw signals:
You can create your own custom signals. If you derive them from the CinemachineSignalSource base class, they appear automatically in the Inspector menu alongside the built-in ones.