Topic: EQ 3 - Something strange

Hello,

2 notes sound harsh on my system, F#5 and B5.

I would like to use the new 3band GEQ to soften the sound on 2 frequencies: 750Hz and 1000Hz.
Here is my setting:
Freq: 750
Gain: -3.5
Q: 12

and

Freq: 1000
Gain: -3.5
Q:12

This gives me a strange graphical result.

Can you confirm please?
Is it normal?


Thanks,

SK

Re: EQ 3 - Something strange

That's normal. This is a parametric equalizer which has only one peaking band (second one). First band is low shelf, third band is high shelf.

Hard work and guts!

Re: EQ 3 - Something strange

EvilDragon wrote:

That's normal. This is a parametric equalizer which has only one peaking band (second one). First band is low shelf, third band is high shelf.

ah ok, thanks,
I hadn't see that

Re: EQ 3 - Something strange

To do that you could use two consecutive EQU3 effects.

Re: EQ 3 - Something strange

It WOULD be cool if we could change bands 1 and 3 to peaking EQ type, rather than shelving...

Hard work and guts!

Re: EQ 3 - Something strange

stamkorg wrote:

Hello,

2 notes sound harsh on my system, F#5 and B5.

I would like to use the new 3band GEQ to soften the sound on 2 frequencies: 750Hz and 1000Hz.
Here is my setting:
Freq: 750
Gain: -3.5
Q: 12

and

Freq: 1000
Gain: -3.5
Q:12

This gives me a strange graphical result.

Can you confirm please?
Is it normal?


Thanks,

SK

I would use the note edit if you have the Standard Version to soften down the offending notes.

Pianoteq Pro 7.x - Kubuntu Linux 19.10 - Plasma Desktop - Hamburg Steinway

Re: EQ 3 - Something strange

EvilDragon wrote:

It WOULD be cool if we could change bands 1 and 3 to peaking EQ type, rather than shelving...


1+ for this.

But I'm confused. It seems to be possible to narrow the band width on the outer filters by increasing the Q factor, even though they are shelving filters instead of peaking filters. But with higher Q settings, something strange happens with the diagram in the EQ3 pane--when one drags the dot lower, the diagram shows a new peak above the flat response and a lowered peak which is below the dragged dot. Try a Q setting of 8.0 to see this clearly.  Not sure if this is a bug or something expected that I don't understand. Happens with both the left and right filters. (Edit: May not be just a display problem, if it's a problem. I'm not sure if I hear an amplitude increase in the freqs shown by the display as having a raised peak or just the increased resonance caused by the steeper curve.)

(I've edited this message several times while fooling around with the Q settings. Sorry for any confusion.)

Last edited by Jake Johnson (23-08-2015 13:22)

Re: EQ 3 - Something strange

That's the correct behaviour for changing the Q of the shelving EQ filter (depending on the filter topology, which is probably biquad filter here I guess).

Last edited by EvilDragon (23-08-2015 10:13)
Hard work and guts!

Re: EQ 3 - Something strange

EvilDragon wrote:

That's the correct behaviour for changing the Q of the shelving EQ filter (depending on the filter topology, which is probably biquad filter here I guess).


Well, is the peak that appears above the flat response line (when one drags the dot down) simply the resonance? Or does the wide shelf + higher Q tilt the shelf, in a sense? I'm having a problem understanding the display, obviously, and more generally, what happens when one applies a high Q to a shelf. Any sites that I can be pointed to?

Re: EQ 3 - Something strange

GRB wrote:

I would use the note edit if you have the Standard Version to soften down the offending notes.

To do that, the Pro version is needed, I only have the Standard.

Now, if I was sure to correct the sound with the Pro version, I could upgrade, but... I am afraid to be confused with the use of all these settings.

Last edited by stamkorg (23-08-2015 14:21)

Re: EQ 3 - Something strange

Jake Johnson wrote:
EvilDragon wrote:

That's the correct behaviour for changing the Q of the shelving EQ filter (depending on the filter topology, which is probably biquad filter here I guess).


Well, is the peak that appears above the flat response line (when one drags the dot down) simply the resonance? Or does the wide shelf + higher Q tilt the shelf, in a sense? I'm having a problem understanding the display, obviously, and more generally, what happens when one applies a high Q to a shelf. Any sites that I can be pointed to?

Q or bandwidth as it's sometimes called is related to resonance (inverse proportional, IIRC), yes.

Hard work and guts!

Re: EQ 3 - Something strange

stamkorg wrote:
GRB wrote:

I would use the note edit if you have the Standard Version to soften down the offending notes.

To do that, the Pro version is needed, I only have the Standard.

Now, if I was sure to correct the sound with the Pro version, I could upgrade, but... I am afraid to be confused with the use of all these settings.


Standard version does this under the Note Edit window.  You can detune, and edit the loudness of individual notes.

Last edited by GRB (26-08-2015 14:44)
Pianoteq Pro 7.x - Kubuntu Linux 19.10 - Plasma Desktop - Hamburg Steinway

Re: EQ 3 - Something strange

Thank you for the information re note edit, which I didn't know about in the Standard version. The C# an octave up from the bass in my tweaked version of the D4 was sounding slightly louder than the surrounding notes.  Took a minute or so to fix.  Having played acoustics for decades I am used to adjusting my playing for this sort of thing, but it's wonderful to be able to fix it so easily and not have to remember, especially for exposed leaps down to it, to adjust my touch.

Re: EQ 3 - Something strange

sandalholme wrote:

Thank you for the information re note edit, which I didn't know about in the Standard version. The C# an octave up from the bass in my tweaked version of the D4 was sounding slightly louder than the surrounding notes.  Took a minute or so to fix.  Having played acoustics for decades I am used to adjusting my playing for this sort of thing, but it's wonderful to be able to fix it so easily and not have to remember, especially for exposed leaps down to it, to adjust my touch.

I have significantly modified my Bluthner by adjusting the loudness and tuning of individual notes in the upper & lower registers. What is nice about Pianoteq is the graphical display for both.  Also the detuning or tuning can be read out in "cents".  For the loudness curve, this is a better approach than trying to fix it with EQ and the Velocity curve - both of which are much more generalized.

Last edited by GRB (28-08-2015 12:44)
Pianoteq Pro 7.x - Kubuntu Linux 19.10 - Plasma Desktop - Hamburg Steinway

Re: EQ 3 - Something strange

GRB wrote:
sandalholme wrote:

Thank you for the information re note edit, which I didn't know about in the Standard version. The C# an octave up from the bass in my tweaked version of the D4 was sounding slightly louder than the surrounding notes.  Took a minute or so to fix.  Having played acoustics for decades I am used to adjusting my playing for this sort of thing, but it's wonderful to be able to fix it so easily and not have to remember, especially for exposed leaps down to it, to adjust my touch.

I have significantly modified my Bluthner by adjusting the loudness and tuning of individual notes in the upper & lower registers. What is nice about Pianoteq is the graphical display for both.  Also the detuning or tuning can be read out in "cents".  For the loudness curve, this is a better approach than trying to fix it with EQ and the Velocity curve - both of which are much more generalized.


Thank you for these informations.

In my case, Pianoteq sounds perfect in my headphones and a little agressive in the 750-1000 Hz range, between F#5 and C6.
That's what makes me think it is an EQ problem.
Anyway, I will try to solve this by a room correction or by tweaking Pianoteq if I have no other choice.

By the way, did anybody ever use a software like ARC2, REW or Mathaudio for a room correction purpose?