Topic: What digital filter are you using?

Out of curiosity what digital filter are you guys using, and why?

Re: What digital filter are you using?

https://forum.rme-audio.de/viewtopic.ph … 68#p177168

BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub13

Re: What digital filter are you using?

Never try "slow" before .. now may be I should experience it. :-)

Pacifist, dumb, not stupid
Listen music out from a box which sounds
Reading words on paper/ screen

4 (edited by ramses 2021-11-22 14:58:23)

Re: What digital filter are you using?

For the rolled-off treble at single speed there is a simple workaround by using the PEQ:
https://forum.rme-audio.de/viewtopic.ph … 26#p130026

BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub13

Re: What digital filter are you using?

ramses wrote:

For the rolled-off treble at single speed there is a simple workaround by using the PEQ:
https://forum.rme-audio.de/viewtopic.ph … 26#p130026


WOW, great! everyday is a new adventure, thanks a lot for that link. :-)

Pacifist, dumb, not stupid
Listen music out from a box which sounds
Reading words on paper/ screen

6 (edited by crazybaby 2021-11-22 17:57:16)

Re: What digital filter are you using?

I use Sharp as it is the flattest across the audible frequency range and I have seen no evidence that anyone can hear a difference with any "ringing" with music.

https://forum.rme-audio.de/viewtopic.ph … 49#p149049

Re: What digital filter are you using?

crazybaby wrote:

I use Sharp as it is the flattest across the audible frequency range and I have seen no evidence that anyone can hear a difference with any "ringing" with music.

https://forum.rme-audio.de/viewtopic.ph … 49#p149049


Agree, but at a particular part of the music with a particular filter (for e.g. NOS I tried) can hear it sound differently for a brief duration (1 second or less) other part of the music not. It is very difficult to describe in words that very small difference heard/felt. And I am not sure if it is my own human error while listening....

Pacifist, dumb, not stupid
Listen music out from a box which sounds
Reading words on paper/ screen

Re: What digital filter are you using?

crazybaby wrote:

I use Sharp as it is the flattest across the audible frequency range and I have seen no evidence that anyone can hear a difference with any "ringing" with music.

https://forum.rme-audio.de/viewtopic.ph … 49#p149049

The nice thing is that you can easily try by yourself, if you hear a difference and which one you prefer.
For me with ADI-2 it was the first time to have this on the tip of my finger, and I do hear a difference in a blind test.

So I’d like to quote myself from the other thread, where I tell what to watch out for:

KaiS wrote:

I selected Slow by ear, but there is a reason why Slow sounds better (to me):

Quote from manual page 81:
”... Slow [filter generates] a near perfect impulse response.
... Slow works best at 88.2/96 kHz [and above], because the decrease in the high frequency area then happens outside the audible range.”


I prefer “Slow Filter” for DA even at 44.1 kHz.

The better impulse response more then compensates for the treble rolloff above 14 kHz (see manual page 84).
I can hear a better separation of high frequency instruments, like Hihats from Shakers, and a better ambience definition.

Nice to have the selectable filters in ADI-2, everyone can easily dial through and find the personal favorite!


This reminds me to a shootout I once did between six then TOTL CD-players.

One of them stood out, sounding more transparent, as if it had a slightly boosted high frequency response.
After doing the (blind) comparison, I measured all of them and found the specific one in fact having a treble rolloff, no boost!
I remember, the company had a marketing name for it – which I didn’t care for.

They had opted for better sound in favor of looking better on measurements, a courageous decision at the time of marketing ruler-flat 20Hz-20kHz frequency responses as HiFi-ideal.

Re: What digital filter are you using?

KaiS wrote:
crazybaby wrote:

I use Sharp as it is the flattest across the audible frequency range and I have seen no evidence that anyone can hear a difference with any "ringing" with music.

https://forum.rme-audio.de/viewtopic.ph … 49#p149049

The nice thing is that you can easily try by yourself, if you hear a difference and which one you prefer.
For me with ADI-2 it was the first time to have this on the tip of my finger, and I do hear a difference in a blind test.

So I’d like to quote myself from the other thread, where I tell what to watch out for:

KaiS wrote:

I selected Slow by ear, but there is a reason why Slow sounds better (to me):

Quote from manual page 81:
”... Slow [filter generates] a near perfect impulse response.
... Slow works best at 88.2/96 kHz [and above], because the decrease in the high frequency area then happens outside the audible range.”


I prefer “Slow Filter” for DA even at 44.1 kHz.

The better impulse response more then compensates for the treble rolloff above 14 kHz (see manual page 84).
I can hear a better separation of high frequency instruments, like Hihats from Shakers, and a better ambience definition.

Nice to have the selectable filters in ADI-2, everyone can easily dial through and find the personal favorite!


This reminds me to a shootout I once did between six then TOTL CD-players.

One of them stood out, sounding more transparent, as if it had a slightly boosted high frequency response.
After doing the (blind) comparison, I measured all of them and found the specific one in fact having a treble rolloff, no boost!
I remember, the company had a marketing name for it – which I didn’t care for.

They had opted for better sound in favor of looking better on measurements, a courageous decision at the time of marketing ruler-flat 20Hz-20kHz frequency responses as HiFi-ideal.


Yes, agree.

Though the equipment is the same, but we have different ears, may be left is different from right, we can tell the difference (even minor) we heard but doesn't mean it fits individual owner, so experience it by yourself and select what you like most, if no difference heard, then means no difference. :-)

However, get some opinions some fellow member is always a good way to learn and understand.

Pacifist, dumb, not stupid
Listen music out from a box which sounds
Reading words on paper/ screen