Some Questions About Libgdx App.Methods

People where can i find info about this methods :

LwjglApplicationConfiguration config;

     config.allowSoftwareMode = false;
        config.audioDeviceBufferCount = 1;
        config.audioDeviceBufferSize = 2;
        config.audioDeviceSimultaneousSources = 1;

what is SoftwareMode?
what is audioDevice stuff… ?

Any help is appreciated…