That's not really how down sampling works. You already have all the information with 48 kHz sampling. Higher rate sampling is just like storing integers to 3 d

That's not really how down sampling works. You already have all the information with 48 kHz sampling. Higher rate sampling is just like storing integers to 3 decimal places, or archiving an upscaled DVD. I recommend you actually read the article. I vaguely recall they did it in video form too.