A better VBA

[Draki]

@JohnPM How do you do that?

 

[JohnPM]

@JohnPM How do you do that?

A little something I've been working on. I had a couple of mind-numbing weeks extracting REW UI text into properties files to allow translation. To escape the monotony I decided to have a go at coding a 3D surface viewer. Not the sort of thing I've played with since the 80's, but it's going OK

 

[Fidji]

View attachment 454456

The subs are placed in the corners, and the room is rectangular, but with openings. The furniture is placed asymmetrically, most notably there is a sofa in front of the right sub. This is why I was concerned that my model would not work. But it did work quite nicely. The MLP sofa was removed for all measurements.

The right sub measurements are a bit screwy though, e.g. I was surprised that I could increase the gain of the cancellation wave with minimal noticeable effects (or side effects!!) which made me think that I was re-measuring the same filters over and over. But no ... I checked those filters and they were definitely different. It's something for me to look at and try to understand.

Very interesting thread, big resepct for your curiosity, and knowledge. Your conclusion seem to confirm that “good ol’ physics’ still works.

Looking at your room, did you consider Neumann’s Planar Wave Bass Array? a.k.a place 3-4 subs in regular distances across the front wall and bass manage them as one.

 

[Keith_W]

Looking at your room, did you consider Neumann’s Planar Wave Bass Array? a.k.a place 3-4 subs in regular distances across the front wall and bass manage them as one.

I had to Google it to see what it is. It's basically a VBA but with enough subwoofers to create a planar wave, and using Neumann's subs and their DSP. I don't want that - the struggle is most of the fun. A more automated system suits a certain type of consumer or professionals who are time poor, but as a hobbyist I see it as a learning opportunity. The more difficult the challenge, the better.

 

[Fidji]

I had to Google it to see what it is. It's basically a VBA but with enough subwoofers to create a planar wave, and using Neumann's subs and their DSP. I don't want that - the struggle is most of the fun. A more automated system suits a certain type of consumer or professionals who are time poor, but as a hobbyist I see it as a learning opportunity. The more difficult the challenge, the better.

Nobody forces you to use Neumann subs or automated calibration. You can still DIY your subs and develop your own filters.
Is more about following the science and acknowledging, that best shape for a wheel is still a circle.

There is no shame in looking for inspiration elsewhere, as, probably, lot of really smart people have asked the same questions and already have the answers. But do not get me wrong - also having fun and spend lot of time and effort and still get suboptimal results is also not a bad thing. With “having fun” being only important thing here, as in every hobby.

EDIT: my personal experience, is that nothing beats proper placement and count of subs. These are enablers for everything else.

 

[Keith_W]

Nobody forces you to use Neumann subs or automated calibration. You can still DIY your subs and develop your own filters.
Is more about following the science and acknowledging, that best shape for a wheel is still a circle.

A torus actually, but I know what you mean

EDIT: my personal experience, is that nothing beats proper placement and count of subs. These are enablers for everything else.

Yeah nobody would disagree with you there.

 

[Fidji]

BTW looking at your mdat - I think you are at 95% of what is possible and your results are better than 90% of “high-end” 2Ch installations out there. Nothing really sticking out as real audible issue. Just enjoy what you have.

 

[OCA]

REW Beta 86 with 3D graphs is out:

REW Beta Release - REW API beta releases

This thread is for beta releases of the REW API. Here are the download links (updated 15th June 2025): Windows 64-bit Windows 32-bit MacOS Linux AMD 64 Linux no JRE The API is REST(ish) with webhooks. Here is the online help. The API documentation is served by swagger-ui and can be accessed by...

www.avnirvana.com