I'll let you in on a little secret

[Jeff B.]

Today I started working on what will be....

Passive Crossover Designer 6

So, there's no guarantees, but I am open to suggestions.

Jeff B.

[Dirk]

> So, there's no guarantees, but I am open to
> suggestions.

Don't? Personally, I don't find it "broke" enough to need "fixin'", but then again, I'm not a very demanding person

The only thing that I would REALLY love would maybe be a way to directly load the data from the BDS and impose that upon the response of the system. Toggle-able, preferably.

[cjd]

> So, there's no guarantees, but I am open to
> suggestions.

Ditch Excel

I have to boot up windows just for the FRD software. Which means I put stuff off and put stuff off...



C

[shawn_a]

> Today I started working on what will be....

> Passive Crossover Designer 6

> So, there's no guarantees, but I am open to
> suggestions.

> Jeff B.

Incorporate everything from the Response Modeler into the PCD. Put everything in one handy package and I would have kittens springing from my ears.

shawn

[daryl]

Maybe you could make it use artificial intelligence to critique the design the user comes up with and change the name to 'Passive Agressive Crossover Designer VI'

[Jeff B.]

> Don't? Personally, I don't find it
> "broke" enough to need
> "fixin'", but then again, I'm not
> a very demanding person

> The only thing that I would REALLY love
> would maybe be a way to directly load the
> data from the BDS and impose that upon the
> response of the system. Toggle-able,
> preferably.

Well, I'm not fixing anything broken. I am just expanding what it can offer. Believe it or not, I may be offering something that does exactly what you are describing on the BDS part. We'll see.....

[Jeff B.]

> Ditch Excel

> I have to boot up windows just for the FRD
> software. Which means I put stuff off and
> put stuff off...

>

> C

Sorry, but I would have no idea how to do all of this outside the Excel environment, nor would I ever have time to start all over again. It's too bad Apple can't support this stuff.

[Jeff B.]

> Incorporate everything from the Response
> Modeler into the PCD. Put everything in one
> handy package and I would have kittens
> springing from my ears.

> shawn

I considered that....then ditched the idea. It's much more complicated to do then just releasing a sister program that works well with PCD, so this is probably what I will do.

[Jeff B.]

> Maybe you could make it use artificial
> intelligence to critique the design the user
> comes up with and change the name to
> 'Passive Agressive Crossover Designer VI'

Great idea! However, at that point I might change the name to HAL 9000.

[cjd]

> Sorry, but I would have no idea how to do
> all of this outside the Excel environment,
> nor would I ever have time to start all over
> again. It's too bad Apple can't support this
> stuff.

It's not Apple's fault.

Besides, who said anything about Apple? They're just as bad...

I am able to install Excel and open the spreadsheets, but the VB stuff just won't go. So far, anyhow. I keep thinking I've missed a necessary option on the install.

But, I don't expect you to rewrite everything. I can hope, but ...

C

[Jeff B.]

> It's not Apple's fault.

> Besides, who said anything about Apple?
> They're just as bad...

> I am able to install Excel and open the
> spreadsheets, but the VB stuff just won't
> go. So far, anyhow. I keep thinking I've
> missed a necessary option on the install.

> But, I don't expect you to rewrite
> everything. I can hope, but ...

> C

What version of Excel are you using and what operating system do you have?

Under "Tools", "Options", "Add-ins" in Excel, make sure Anaysis Toolpak and Analysis Toolpak-VBA are both checked. And finally, make sure your Excel security is set to Medium so it gives you the option of turning on and running the VBA when the program opens. If none of this fixes the problem we're back to my first two questions.

Jeff B.

[unknownuser]

> Today I started working on what will be....

> Passive Crossover Designer 6

> So, there's no guarantees, but I am open to
> suggestions.

> Jeff B.

You know what would be the bees knees?

The user enters the driver locations on baffle, the mic location relative to the baffle and then the usual driver response files with phase within.

Provide two sliders: a horizontal position slider and a vertical position slider (with "centering buttons to take you back to the reference measurement plane). When the sliders are moved, automaticaly update the frequncy response at the observation point indicated by the slider.

You'd need to define a frame of refence point so that the slider either moves in space by linear increments (flat metres, not in an arc) or it moves in a sphere by degrees about some defined design center, which could also be entered by the listener.

Did I mention that would be the bees knees?



(Originally posted by: DDF)

[unknownuser]

On second though, you'd either have to model the driver directivity using flat piston approximations (user enters diam) or allow the user to enter multi measures at defined locations then interpolate and extrapolate over space.

I didn't say it'd be easy!


(Originally posted by: DDF)

[Jeff B.]

> On second though, you'd either have to model
> the driver directivity using flat piston
> approximations (user enters diam) or allow
> the user to enter multi measures at defined
> locations then interpolate and extrapolate
> over space.

> I didn't say it'd be easy!

Really? What's hard about this?

I can visualize the math for the multi-axial delay in my head right now. The problem is implementing the correct directivity for diameter and keeping the file from blowing up in size too much. I am already doing some weird stuff to make a 24mB file look like a 1.5mB one.

[dthomas]

> Really? What's hard about this?

> I can visualize the math for the multi-axial
> delay in my head right now. The problem is
> implementing the correct directivity for
> diameter and keeping the file from blowing
> up in size too much. I am already doing some
> weird stuff to make a 24mB file look like a
> 1.5mB one.

Well if you asking for ideas....

I like the sliders for moving the drivers on a baffle along with varying mic distance. Sounds interesting.

But what would be convenient is a schematic tool that populates a schematic based on the values. Also it would be nice if you could move the response and phase graphs to a position that is visible from all 3 filter sections. I spend a lot of time varying values and sliding back up to see the phase response.

Or will there be 4 filter sections? Maybe more woofers too?

Dave

Dave

[unknownuser]

> Really? What's hard about this?

> I can visualize the math for the multi-axial
> delay in my head right now. The problem is
> implementing the correct directivity for
> diameter and keeping the file from blowing
> up in size too much. I am already doing some
> weird stuff to make a 24mB file look like a
> 1.5mB one.

The challenge would be keeping the response time reasonable. The file size and math should be easy as you'd have all the components already available in the file, they'd just be combined differently now. Along with the multi axial delay and the directivity, don't forget that you'd need to recalculate the diffraction signature.

With this feature, it'd also be trivial to provide approximated directivity plots.

IMO, this could be a speaker "killer ap".


(Originally posted by: DDF)

[Pete Schumacher ®]

> Today I started working on what will be....

> Passive Crossover Designer 6

> So, there's no guarantees, but I am open to
> suggestions.

> Jeff B.

Set the circuit values to each consist of a parallel set of R, C, L, with C and L each having a user defined series resistance.

____R____
|__C___R__|
|__L___R__|

Hope that makes sense.

[Dirk]

> What version of Excel are you using and what
> operating system do you have?

> Under "Tools",
> "Options", "Add-ins" in
> Excel, make sure Anaysis Toolpak and
> Analysis Toolpak-VBA are both checked. And
> finally, make sure your Excel security is
> set to Medium so it gives you the option of
> turning on and running the VBA when the
> program opens. If none of this fixes the
> problem we're back to my first two
> questions.

> Jeff B.

The problem is that the required VB dependancies aren't technically IN excel, or office for that matter. No, they're the VB runtime bits that come with Windows.

[cjd]

Oh, you're going to just roll your eyes and give up.

> What version of Excel are you using and what
> operating system do you have?

Linux (Ubuntu 7.04), running Excel under WINE (most recent).

It doesn't let me add the toolpacks officially, but it may be a problem with some capitalization in the actual files vs. what MS has programmed (path is only first letter caps, no caps in the xll or xla, yet MS is failing trying to find a file at a path that's largely all caps...) I'll mess with simlinks later and see if I can get it running.



Oh... it's also Office 2000.

[dlr]

I asked this of Bohdan for SoundEasy, but I don't think he's going to pick it up. Should be in that package, anyway. At times I've had to point out that SE lacks some of what CALSOD did as a DOS program back in the early 90's.

One thing I really like about CALSOD 3.0 is the ability to specify the gauge for inductors and to have that gauge resistance calculated dynamically as the inductance is varied. I'm sure you're aware of the convenience this adds. This would have to take up more real estate on the display, though. At least this should be one of the simpler changes you could make. Allow for 14, 18, 18 and 20 gauge conductors.

This will also cover part of Pete's request. I think I've mentioned the need for the inductor resistance in parallel traps as well.

dlr