Yes I too would like this separated into 1x and Nx filter changes in HQPClient. The fundamental problem is that once you touch the current filter in the client, the only way to go back to separate filters for 1x and Nx is by opening HQP Desktop preferences, which in my case is a headless server that I have to remote into.
And/or a ‘reset’ button that would take one back to all of baseline settings saved in HQPDesktop would be nice.
Point is changing currently active filter. Changing 1x or Nx setting won’t do that, they are just defaults to pick when source rate change happens.
That would be total of four settings then.
I think this is better option and I can think about adding such. Something like “Reset to defaults”.
hi guys
set up a budget stack in the office with a Schiit Modius and Magnius.
can anyone tell me what to set for dac bits in hqplayer? or just leave it at default?
thanks!
Since Modius uses AKM DAC chip (AK4493), you can just leave DAC Bits to Default.
Which filters are technically best at apodizing, or is it just that some apodize more than others?
The most rapid method for switching filters (or anything) in HQP for me is to have Roon output to Virtual Audio Cable, and have HQP use VAC as the input. This way the Roon stream just continues and you don’t have to bother stopping playback.
Then I use HQPControl with batch files to switch any number of elements and restart playback. It takes a double-click and a second or so to switch, and the audio stream is not interrupted.
Create a set of batch files for your test cases and off you go.
I am hoping someone can help explain what I am hearing so I may describe it better going forward.
I’ve been listening using the poly-sinc-short-lp-2s filter. After a few hours I get a ringing in my ears.
I’ve since switched to poly-sinc-short-mp-2s and this ringing does not occur.
All volumes, hardware path etc being identical.
What are my ears ringing about?
Thank you.
Hi, I’m interested as well. Some filters sound great but after a period of time, I get ringing too. For me it was poly-sinc-mp and its short version, sounded good but rang my ears after awhile.
poly-sinc-gauss family doesn’t bother my ears at all.
Interesting, pre-ringing is manifesting as ear ringing
If you try for example poly-sinc-ext2, does it still happen?
I had not tried.
I’ll see if I can without it skipping.
I have been unable to get ext2 working without it pegging the cpu.
What kind of CPU do you have if ext2 doesn’t work for you?
I changed other items and have ext2 working.
The ringing, for me, ended almost immediately.
For your case the important aspect seems to be to use a filter that reaches full high attenuation by Nyquist.
So for example ext2, ext3, gauss-long, gauss-xla, gauss-hires, sinc-S/M/Mx are likely to work well for you.
I have no idea what this means other than I have some reading to do.
Thank you.
Wikipedia is (often) your friend: Nyquist frequency - Wikipedia. Basically, you want to use a filter that suppresses aliasing (see figure on that page) very aggressively.
I went with this. I have other questions now but I’ll dive into that rabbit hole on my own.
MT-002: What the Nyquist Criterion Means to Your Sampled Data System Design (analog.com)
