Got it. What is the frequency range of a DSD vs Vinyl? Are they both limited to 20 kHz?There's a difference between the sample rate of DSD (which can go up to MHz) and the frequency range of your hearing or a pair of headphones. You are correct in saying that the human ear can only hear up to about 20kHz; realistically, 18-19kHz for a normal, healthy adult.
Now, the sample rate of DSD, or FLAC, or any other file type has nothing to do with that. The Hz in sample rate refers to how many times per second the computer checks the waveform for a data point. You can think of it like frames-per-second on a GPU or the refresh rate of a monitor (which is also measured in Hz). So, for example, a DSD256 file with an 11.2MHz sample rate will create a waveform with 11.2 million data points per second. Whereas, a CD rip with a sample rate of 44.1kHz will only obtain 44,100 data points per second, and any data point in between will be estimated by the DAC that's processing it; similar to, again, modern GPU technology, where GPUs can now fill in gaps between frames by "guessing" what they'd look like in order to make the gameplay look smoother or more seamless.
It's really difficult to explain without using graphics and stuff, but the key thing to understand is that sample rate and frequency range are two completely different things. It's, sadly, often misunderstood, but it's not something you should worry about at all in this scenario.
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