When diagnosing an issue with audio output on a desktop PC, you notice that there is no sound coming from the speakers, despite the volume being adequately configured. What function of the sound card, if not operating properly, is MOST likely the cause of this issue?
Routing of internet packets to synchronize streaming media
Compression of audio files to reduce file size on the hard drive
Conversion of digital audio data into an analog signal for output
Acceleration of graphical rendering processes for gameplay