i want to add gain and distance filter plugin into my unity project, but i not kown where their are in my mac application, and how about android. ask for help
The gain and distance plugins are intended as examples of how you can make your own plugins with the FMOD LowLevel API, but for Mac you can find them in the Plugins folder in the Mac version of FMOD Studio.
As for Android, and some other platforms, you will have to build them manually using the FMOD LowLevel API. At the moment the only Android plugin we provide is the GoogleVR plugin.
All the different platforms of FMOD Studio/Lowlevel API should be available on our download page.