Before I ask elsewhere, I will ask here. What is a 'Q'?

[RiffWraith]

I noticed that some Altiverb impulses have a Q.

Q?

[D]

I presume it is related to the "Q" control on an EQ, which specifies the width or curve of an adjustment. In the case of an EQ, it specifies how wide or narrow the changes you make to a specific band are.

[Softy]

Yep. Here's an example. Imagine that you have the EQ adjusted to boost say, 6 dB at 1,200 Hz. If you make the Q of your EQ greater, you'll be affecting a wider range of frequencies above and below 1,200 Hz (say, 1,050 to 1.350 Hz). If you make the EQ's Q lower, the range of frequencies affected will be narrower (say, 1,155 to 1,205 Hz).

[OpenMind]

Q?

As far as I know, you can only use stereo impulses in the regular Altiverb version.
In Altiverb XL you also have surround reverb.

I'm a regular user, so I don't see any surround impulses to choose from.
But when I take a look at the Altiverb/Impulse Responses folder, there are also impulses named like "mono to quad omni", "stereo - quad cardiods".

So... I'm 99.9% sure that the Q in Altiverb IR-names has nothing to do with eq-bandwith. My best guess: The Q identifies the surround impulses.:icon_cool:

[Softy]

Okay OpenMind. I'll defer to your greater familiarity. But I don't see the logic of your argument.

[OpenMind]

Okay OpenMind. I'll defer to your greater familiarity. But I don't see the logic of your argument.

What argument? What logic? :D

I'm just saying that the Q in an impulse name might refer to Quad(raphone) because there are so many impulse folders with the word 'quad' in their name :wink:

And now we're at logic.... Because Altiverb is a reverb unit and not an equalizer, the most logical option would be that the Q in an impulse name would refer to quad. :eusa_think:

Besides that, Altiverb has a built-in EQ with it's own Q-setting. So I don't see the sense of having impulses with different (EQ) Q-settings. In fact all Audio Ease impulses are pure and not processed. There are different microphone (cardiod/omni) and different position (var. distances and mono/stereo/quad) impulses for every 'room', but not different eq-settings.

[D]

No one has said it is an EQ "Q" factor, you have only interpreted it to be such. As such, it is quite possibly used as something else entirely, and "Q" was used simply to equate the unfamiliar mind with the term so that its general pattern of use and/or effect, and not the particular use and/or effect you are associating it with, would be more familiar.

[Softy]

What argument? What logic? :D

I'm just saying that the Q in an impulse name might refer to Quad(raphone) because there are so many impulse folders with the word 'quad' in their name :wink:

And now we're at logic.... Because Altiverb is a reverb unit and not an equalizer, the most logical option would be that the Q in an impulse name would refer to quad. :eusa_think:

Besides that, Altiverb has a built-in EQ with it's own Q-setting. So I don't see the sense of having impulses with different (EQ) Q-settings. In fact all Audio Ease impulses are pure and not processed. There are different microphone (cardiod/omni) and different position (var. distances and mono/stereo/quad) impulses for every 'room', but not different eq-settings.

Now it's starting to almost make sense to me. It must be my brain injury. I'll just opt out here now.