How Does Up-Sampling Work?

[audiventory]

1. Here how work oversampling How Convert Sample Rate. Oversampling

 

2. Oversampling don't improve audio quality as itself.

 

3. Any DAC contains analog filter for restoring analog signal from digital.

 

Analog filter should suppress artefacts of digital signal (frequency range [0 ... sample rate/2] mirrored to [sample rate / 2 ... sample rate] range).

 

More sample rate - analog filter possibly provide more suppression (at higher frequencies).

With higher sample rates these better suppressing area become available.

 

Analog filter has low growth of supression comparing digital.

 

In DAC (or into PC software or both) can be applied oversampling and additional digital filtration.

 

It allow decrease artefacts level in frequency range of low supression of analog filter.

[audiventory]

As rule, better to maximum sample rate of your DAC.

 

In general, need found "best sounding" sample rate.