Try this link The Opn Family: Meeting Even More Audiological Needs - AudiologyOnline
For those who don’t want to bother, the snippet from the link that talks about it is below. It doesn’t really say much details about each of them. The best way to know is to download the Genie 2 software, install it on our computer, create a client profile (yours) and add in your audiogram, then go to the Fitting section, select Program Manager, then for programs 2, 3, and 4, select the listening program you want (see example in second picture below), then go through each of the listening program as selected to see what’s turned on and what’s turned off for them to get an idea.
But for example, if you pick Music for P4 like the example below, if you go to the OpenSound Navigator page, you’ll find that Noise Reduction is turned off, and the directionality setting is “Pinna Omni”. In the Automatics page, you’ll find that Transient Noise Management is turned off. In the Fine Tuning page, if you click on the CR (Compression Ratio) button, you’ll see the compression ratio value, and you’ll notice that the values in the Music program are lower than the values, say, in the Speech in Noise program…
On the reverse, if you select P3 (Speech in Noise), you’ll find that in OpenSound Navigator, Noise Reduction is set to On, Directionality is set to “Open Automatic”, OpenSound Transition is set to High help. In the Automatics, you’ll see the Transient Noise Management set to Medium or High (depending on your profile preference selection from another page).
Anyway, that’s the only effective way to understand how each of the built-in program is set -> walk through all the parameters in Genie 2 and see what those values are set to and you’ll find that they should be set to values that are consistent with the corresponding program if you were to build up such a program yourself.
Maybe there’s a “report” page in Genie 2 that dumps out all these parameters set for each program all on a condensed page, although I’m aware of a way, but I’m still very new to Genie 2.