Upsampling MQA files to original resolution with sox will sound like the original resolution

[mansr]

8 minutes ago, bibo01 said:

As I am not too familiar with SoX, what do exactly "-S" and "-vsM" do?

-vsM is shorthand for "-v -s -M" options of the "rate" filter.

 

-v: very high quality

-s: steep filter

-M: minimum phase

[mansr]

9 hours ago, pkane2001 said:

How different is this to, say, the HQPlayer poly-sinc-xtr-mp filter? The description sounds similar to the above.

I have no idea, but you could probably tease the impulse response out of HQPlayer if you tried.

2 hours ago, soxr said:

You just need to find which recipe sounds the most similar like DXD up to a point where you no longer can hear the difference. As a link to the source and header files is included in my article, it should be very easy for other devs to find the exact settings that mimick sox -vsM

It's easy enough to dump the exact coefficients used by sox and use them with any other software that supports custom filters.

[mansr]

1 minute ago, Bob Stern said:

@soxr:  Are you Rob S, the developer of sox?

Not if his comments on Archimago's blog were under his real name.