I think he would like to see the group delay normalized by period, to give the delay in cycles instead of seconds. From the explanation, it seems like the value desired is (group delay value)*(frequency).
Will it be christmas ?
Just to be sure, do we agree calling "normalized" the use of GD/(1/fs) as variable of interest instead of GD for Y axis ?
You're right, there's something to get clear about min/max graph limits requirements : In Akabak, i use custom upper and lower limits. I get in horn designs > 5-6 ratio in the 3000-5000hz range. But i think this "normalised" group delay should be the more of interest in the low rang, where it keep even in bad case below a ratio of 2:1. So [0:2] for Y would be adequate for not loosing too much information/subtilitises in the low range, and keep some in the midrange. The must would be clicking on the Y scale, the possibility to switch for a [0:10] scale.
Maybe can i ask cumulative gift for christmas + birthday ^^
^^ Exactly. I feel stupid complicating things more than what they are...it's of course simplier said like that, and the same as GD / (1/fs).
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Hi Bjørn,
You shouldn't be visiting forums! Get back to your thesis-writing
.Kind regards,
David
Hi Damien,
Because you have been so "well-behaved this year", and are the only person to have reported a Hornresp bug in ages, I think I can hear "Jingle Bells" not too far away.
Yes.
I will see what can be done.
"Merry Christmas" and "Happy Birthday" together, you reckon?
It was mentioned in the post you linked to - you must have missed it.
QUOTE
He "normalizes" Group Delay into cycles of delay calculated by dividing the group delay by the period of the frequency at each point (or the frequency times the number of seconds of delay);
UNQUOTE
Kind regards,
David
Because you have been so "well-behaved this year", and are the only person to have reported a Hornresp bug in ages, I think I can hear "Jingle Bells" not too far away
.Yes.
I will see what can be done
."Merry Christmas" and "Happy Birthday" together, you reckon?
It was mentioned in the post you linked to - you must have missed it
.QUOTE
He "normalizes" Group Delay into cycles of delay calculated by dividing the group delay by the period of the frequency at each point (or the frequency times the number of seconds of delay);
UNQUOTE
Kind regards,
David
Nota Bene Revisited
David,
Just think how much more you could do with one of these?
Supermicro | Products | SuperWorkstation | Mid-Tower | 7038A-i
To start the ball rolling, I just need your mailing address.
If we send you the additional parts to finish the system, can you install them?
Regards,
Bill
Hi Bill,
Thanks for the kind offer, but at this stage I am hoping that I can survive without access to AkAbak. If I get really desperate though, I can probably arrange a session on a friend's Windows XP computer, if I ask them nicely enough
David,
Just think how much more you could do with one of these?
Supermicro | Products | SuperWorkstation | Mid-Tower | 7038A-i
To start the ball rolling, I just need your mailing address.
If we send you the additional parts to finish the system, can you install them?
Regards,
Bill
There are a whole bunch of "if's" But a quick calculation of the import costs makes a person think it might simply be easier to Paypal over some funds and let the man do what he thinks best.
The import duty is prohibitive to say the least. And that is an end user cost. As in the person getting the import.
As a normal person you don't usually see these costs. But when importing products from overseas many countries have these costs. And they are many times hidden in the prices we pay retail.
The import duty is prohibitive to say the least. And that is an end user cost. As in the person getting the import.
As a normal person you don't usually see these costs. But when importing products from overseas many countries have these costs. And they are many times hidden in the prices we pay retail.
This is not the method of getting a system to David that I had in mind.
As he has not accepted my offer yet, all of this is premature.
Regards,
WHG
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Hi Bill,
That is certainly a most impressive system!
I think it is probably safer though if I persist with my trusty Windows 7 Compaq (HP) desktop - I understand how it works, and it does everything that I need
.(I can always buy a cheap second-hand Windows XP PC if I really want to run AkAbak).
Kind regards,
David
That's not so far from the truth, actually
Been there Bjørn.
Hope all goes well with your thesis.
Offer Withdrawn
Your earlier statements led me to believe that you were working with an antiquated development platform, thus the offer. The system offered is the one I configure for myself and office staff to use. We still use an HP Elitebook in the field, but for the desktop, I find the particular brand offered to be superior in both reliability and performance. To run BE and FE based simulators takes lots of MPU cores to keep process times reasonable.
I assume you are running MS/Win7 64-bit. You could try running AkAbak under the 32-Bit simulator. Demo version of ABEC3 should run on your system without problems as well. The use of a Dongle, now in an USB variant, precludes my use of the full version of this program.
Regards,
Bill
Hi Bill,
That is certainly a most impressive system!
I think it is probably safer though if I persist with my trusty Windows 7 Compaq (HP) desktop - I understand how it works, and it does everything that I need
(I can always buy a cheap second-hand Windows XP PC if I really want to run AkAbak).
Kind regards,
David
Your earlier statements led me to believe that you were working with an antiquated development platform, thus the offer. The system offered is the one I configure for myself and office staff to use. We still use an HP Elitebook in the field, but for the desktop, I find the particular brand offered to be superior in both reliability and performance. To run BE and FE based simulators takes lots of MPU cores to keep process times reasonable.
I assume you are running MS/Win7 64-bit. You could try running AkAbak under the 32-Bit simulator. Demo version of ABEC3 should run on your system without problems as well. The use of a Dongle, now in an USB variant, precludes my use of the full version of this program.
Regards,
Bill
Hi Bill,
I have Microsoft Windows 7 Home Premium Edition.
It won't run 16-bit programs like AkAbak, but that hasn't posed a significant problem for me so I haven't bothered to do anything about it
.Kind regards,
David
Hornresp Update 3970-160306
Hi Everyone,
The delay per period feature requested by Damien in Post #6072 and further detailed in Post #6076, has now been included in the Filter Wizard tool.
The functionality is documented in the Filter Wizard description included in the Tools Menu section of the Hornresp Help file, and is also provided below.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Select the Delay option to display the group delay or group delay per period of the specified passive or active filter and loudspeaker system. Not applicable when the Filter Wizard is selected from the Loudspeaker Wizard, when room gain is included, or when the Passive or Le Cléac'h filter option is selected and Rg is non-zero.
Double-click anywhere on the group delay chart to switch to the group delay per period chart. Double-click anywhere on the group delay per period chart to switch back to the group delay chart.
Double-click anywhere on the group delay per period chart Y-axis vertical scale to switch the chart range from the default 1 cycle to either 2 cycles, 5 cycles, 10 cycles or 20 cycles.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kind regards,
David
Hi Everyone,
The delay per period feature requested by Damien in Post #6072 and further detailed in Post #6076, has now been included in the Filter Wizard tool.
The functionality is documented in the Filter Wizard description included in the Tools Menu section of the Hornresp Help file, and is also provided below.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Select the Delay option to display the group delay or group delay per period of the specified passive or active filter and loudspeaker system. Not applicable when the Filter Wizard is selected from the Loudspeaker Wizard, when room gain is included, or when the Passive or Le Cléac'h filter option is selected and Rg is non-zero.
Double-click anywhere on the group delay chart to switch to the group delay per period chart. Double-click anywhere on the group delay per period chart to switch back to the group delay chart.
Double-click anywhere on the group delay per period chart Y-axis vertical scale to switch the chart range from the default 1 cycle to either 2 cycles, 5 cycles, 10 cycles or 20 cycles.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kind regards,
David
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