Help me to understand filters

[Steve B]

 

5 hours ago, manisandher said:

 

Capturing the output from HQP (resampled twice) and then simply aligning it with the original in Audacity.

 

 

No. I wouldn't know how to do this even if I wanted to.

 

But the simple approach I'm taking is capable of <-200dB nulls (see Audacity plot earlier). And I'm getting -190dB nulls with many of HQP's filters... but only going from hires to 44.1 and back to hires, and not the other way round.

 

Mani.

 

I think pkane2001's DeltaWave null comparator should take care of sub sample delay.  Have you tried that?  It's a wonderful program.

[Steve B]

On 10/11/2020 at 3:43 AM, manisandher said:

4. minringFIR-lp:

 

 

The up-sampled and original files do not null. There is a reasonable amount of imaging beyond Nyquist (see inset).

 

 

 

Thank you for posting this.  This is exactly how the Weiss Saracon resampler looks, and I could never find any other resampler that had this character.