format to a hd based audio signal and a non hd audio signal in one implementation the optical drive 154 is a digital versatile disc dvd player recorder the gpu 120 may be a graphics device designated for general purpose graphics related computing for the graphics source 156 the audio driver 147 may cause the hd controller 162 to process the audio source 158 to generate a hd based audio signal the hd based audio signal may be further routed to and outputted by the gpu 120 the audio driver 147 may also cause the gpu 120 to process the audio source 158 to a gpu audio signal throughout the disclosure system audio generally refers to an audio signal that is not processed by the gpu 120 and gpu audio generally refers to another audio signal that is processed by the gpu 120 in one implementation the gpu audio is u201c effective spacious sound u201d audio signal to generate the gpu audio the gpu 120 in one implementation may utilize thread processors to encode or decode the audio source 158 and to filter out associated noises to generate and output the gpu audio an option of an output for the gpu audio may be enabled the option may be offered by the application program 142 in one implementation in addition to enabling the option a connection between the external audio device 152 and the graphics subsystem 110 may be required.