Why upsampling with HQPlayer give you better music

[James_Sun (Creator of the no-pseudo-science.blogspot.com)]

@dabassgoesboomboom

James, for the purposes of what we are talking about, you can consider them the same, there is no need to be getting pedantic on it:

@jussi_laako

Upsampling is same as oversampling, but used to emphasize DAC side process and that proper digital filters are used for it (which is not always the case for oversampling).

As @jussi_laako mentioned that up- and over- sampling is the same from the DAC’s point of view.

For this, I 100% agree. i.e. it means the DAC cannot tell if a 192/24 digital input is from Hi-Res (192/24, i.e. over-sampling as 44kHz is good enough to capture 22kHz audio signal) or from a up-sampling source (i.e. up-sampling from a 44kHz source to 192/24 by HQPlayer)

One thing we are pretty sure is that the two “192/24” are different to our ears as the over-sampled 192/24 “contain more data from the original analog audio signal”

i.e.
The up-sampled 192/24 source was interpolated from the 44kHz input source, i.e. 44k sampled points per second.

The over-sampled 192/24 source would have more sampled points from the original audio signal, i.e. 192k sampled points per second.

If we look at the original question I asked:

@Marc_Lacroix

Hi-res music is not about over sampling.
It is an original performance that was recorded with a higher sampling rate.

We were talking about Hi-Res music (e.g. 192/24). In this context, Hi-Res music is about over-sampling. Hi-Res music is NOT about up-sampling.

Therefore, sorry, I cannot agree with you that over- and up- sampling are the same, especially with what we were talking above.