Software Development - feature request?

Area for tester information and features

Re: Software Development - feature request?

Postby Bob Brines » Wed Jun 14, 2017 5:56 pm

Recently updated to w10 1703. Thought I'd try the work-around for unsigned drivers. Booted up with unsigned driver enforcement disabled. Started WTPro 7.01. W10 asks for a driver and I point it to XpVista7Drivers\i386. W10 can't find a driver. Mission accomplished.

You would't happen to have a copy of W7 lying around that I could borrow to create a dual boot, would you?

Bob
Bob Brines
 
Posts: 13
Joined: Thu Jul 23, 2009 12:37 pm

Re: Software Development - feature request?

Postby WTPro » Fri Jun 16, 2017 8:53 am

Hi Bob

The driver loader does not load the SYS files directly. Rather, it needs to find and install from what is defined in the INF files. These are found in 'XpVista7Drivers', not 'XpVista7Drivers\i386'. These are the modified INF files that are given to us by the manufacturer of the device we use. We are obligated to change the vendor and manufacturing ID's, as well as the product name that goes with the device. INF files have no provision for a 'sub-vendor', hence the problem. Interestingly, and related to some other discussions on this topic, the ASIO driver community has a similar problem. Several of the ASIO drivers attach to a very long list of devices as defined in their INF. If the INF is modified (to remove conflicts), it too runs afoul of MS. The solution again being, downgrade to what looks like a Win7 equivalent driver signing.
WTPro
User avatar
WTPro
 
Posts: 135
Joined: Fri Nov 23, 2007 6:05 pm
Location: East coast

Re: Software Development - feature request?

Postby bernard » Mon Feb 12, 2018 5:01 pm

Hello
I like using this Scanspeak Excel spreadsheet ( http://www.scan-speak.dk/download/VENTE ... .US_EN.zip ) that uses the Thiele-Small parameters and the Advanced FDD parameters developed by Mr. Thorborg.
http://www.bnam2012.com/papers/Thorborg_31.pdf & http://www.bnam2012.com/papers/Thorborg_31.pdf

Would it be possible to get these FDD settings in a future update of Woofertester 2 ?

John Mulcahy's REW software calculates them but I prefer to use WT2, which measures the impedance much more precisely in the low frequencies.
Thank you for your attention.
Best regards.
Bernard
bernard
 
Posts: 4
Joined: Thu Dec 27, 2007 12:49 pm

Re: Software Development - feature request?

Postby WTPro » Tue Feb 20, 2018 12:23 pm

Though this is not in wide spread usage yet, it does seem to be catching on as a standard. So yes, this or some variant might happen.
WTPro
User avatar
WTPro
 
Posts: 135
Joined: Fri Nov 23, 2007 6:05 pm
Location: East coast

Re: Software Development - feature request?

Postby mwmkravchenko » Fri Apr 27, 2018 11:38 am

So I hear through the grapevine that you are considering introducing calculation of the advanced inductance parameters worked out by Thorborg and Futtrup.

Nice!

How hard would it be to introduce a possibility to plug in the Measurements Specialties Accelerometer and have that work directly within the software suite?
This option would be really useful for a number of reasons. Also make it interesting to work against Klippel.
On the topic of voltage input from a sensor being able to be read directly into the software suite.

I have a Baumer Laser that is most useful and it to reads out in a low voltage that would be possible to interface. Not doing this in Speaker tester at the moment.

Also the USB turntable option we have discussed?? DOA or in the works?

Lastly 40 kilohertz recording of tweeters, I know only one channel would work as they have to be combined so not quite sure the complication involved in the software side.
mwmkravchenko
 
Posts: 6
Joined: Tue Jan 24, 2012 12:01 pm

Re: Software Development - feature request?

Postby WTPro » Mon Apr 30, 2018 11:25 pm

Yes the Thorborg parameters seem to be gaining acceptance, so adding this makes sense. Do keep in mind however that a lot of the benefit comes downt to matching the impedance curve. It is after all the current in the coil that interacts with 'B' that in turn creates the force that moves the mass. Quite a lot of these issues can be resolved by simply hand tweaking the Rem/Xem parameters. I am also saying hand tweaking quite intentionally here. Making the software 'smart' always seems to always hit a snag with someones driver. All it takes is a small resonance at the wrong place and blamo! The smart algorithm isn't so smart!

As far as the Turntable goes, I did add the software interface :ugeek: . However, I never got around to building a turntable, so all I have is a software simulator. This seems to work quite well, but I am sure that the moment I build a physical turntable, I will want to change something. If I am not careful, I could easily get stuck supporting something thats going to change!
WTPro
User avatar
WTPro
 
Posts: 135
Joined: Fri Nov 23, 2007 6:05 pm
Location: East coast

Re: Software Development - feature request?

Postby WTPro » Mon Apr 30, 2018 11:46 pm

Though we have not discussed the use of an accelerometer in detail, in theory the signal can be applied to either the line or XLR inputs as either a measurement or reference source. However, getting the correct shape (for velocity or displacement) would then require an additional 10/20/40 dB/decade slope. The good news is that this is already done for an as yet unmentioned new feature. Properly scaling and displaying the correct units will however require additional thinking. The same might also be said for a Laser.

As for 40 kilohertz testing (tweeters) I think the smart thing to do will be to add some license that would allow a third party external sound card to be used. This avoids having to create a new hardware platform.
WTPro
User avatar
WTPro
 
Posts: 135
Joined: Fri Nov 23, 2007 6:05 pm
Location: East coast

Re: Software Development - feature request?

Postby mwmkravchenko » Sat May 05, 2018 11:38 am

WTPro wrote:Yes the Thorborg parameters seem to be gaining acceptance, so adding this makes sense. Do keep in mind however that a lot of the benefit comes downt to matching the impedance curve. It is after all the current in the coil that interacts with 'B' that in turn creates the force that moves the mass. Quite a lot of these issues can be resolved by simply hand tweaking the Rem/Xem parameters. I am also saying hand tweaking quite intentionally here. Making the software 'smart' always seems to always hit a snag with someones driver. All it takes is a small resonance at the wrong place and blamo! The smart algorithm isn't so smart!

As far as the Turntable goes, I did add the software interface :ugeek: . However, I never got around to building a turntable, so all I have is a software simulator. This seems to work quite well, but I am sure that the moment I build a physical turntable, I will want to change something. If I am not careful, I could easily get stuck supporting something thats going to change!


Let me know if you want a turntable built. I'm rusty on the software side of things not on the getting things built side :D
mwmkravchenko
 
Posts: 6
Joined: Tue Jan 24, 2012 12:01 pm

Re: Software Development - feature request?

Postby WTPro » Mon May 07, 2018 1:28 pm

The thing about this is that there are a lot of potential controllers out there. I have several projects in mind (not all audio), which makes the choice a little more interesting. Some of the x86 mini-boards that have integrated micocontrollers on them could be really cool, but then, motor support seems lacking.
WTPro
User avatar
WTPro
 
Posts: 135
Joined: Fri Nov 23, 2007 6:05 pm
Location: East coast

Re: Software Development - feature request?

Postby scottg » Thu Jun 07, 2018 10:28 pm

..IM distortion alternate/easier view (w/ Klippel test protocol):

http://aplaudio.com/conc2/products/tda-im/
scottg
 
Posts: 1
Joined: Mon Jun 04, 2018 9:26 pm

PreviousNext

Return to Woofer and Speaker Tester Information



Who is online

Users browsing this forum: No registered users and 2 guests

cron