The meaning of "Unscaled white noise", "Scaled white noise", and "Non-white noise" correspond to the "one", "sln", and "mln" options in the legacy wden() function. You can see the help for WDEN:
>> doc wden
Please note that if denoising a signal is the goal, the waveletSignalDenoiser app is the recommended option over the legacy waveletAnalyzer UI.
