Audio quality
The reason why we are discussing audio quality is because sound quality, like image quality, is of huge importance these days. We already use the 4K resolution image quality today, and there will be more devices and games that would support this in the future. How about sounds? The listening experience needs to match the quality of the image and provide more than just mono or stereo sounds. Sound experience has also progressed to multichannel surround sound, starting at 5.1, 7.1, and beyond these days, to obtain a life-like immersive audio experience. This is definitely something to think about when creating, storing, and playing audio files.