Ultimate Equalizer for Win7 and Win10 soundcards

[bohdan]

Dear All,

I have uploaded to my website a simple version of UE5 software that allows you to experiment with Linear-Phase loudspeaker on Win7 and Win10. As before, it's free to download for SE users (you must have SE dongle).

Visit https://www.bodziosoftware.com.au/

Loudspeaker design can be an exciting activity, at least at the beginning. If your enthusiasm fades somehow, because the design process and the final products become a little predictable, then perhaps the approach offered by UE5 would inject some life back into your hobby.

The outcome will be a DSP equalized loudspeaker system with acoustically linear phase. Only such system can reproduce square waves. Add to it the intelligent room EQ, and the final product will outperform previous designs. The DSP will process up to 16 channels with 8192 – 32768 coefficients in each channel, offering outstanding low-frequency resolution. There is a lot of information about advantages of linear-phase loudspeakers available on my website.

All the above can be accomplished by investing in a second-hand Win7 or Win10 computer (maybe you have one lying around ) and a sound card or two.

More explanations: https://www.bodziosoftware.com.au/Ul...-%20Marian.pdf

If you have any questions, please email me: [email protected]

Best Regards,
Bohdan

[bohdan]

Dear All,

The UE5 I posted on the website is a zipped executable file. Your Windows Defender may flag it as malware or trojan - my apologies

I have re-named the executable file as "****.aaa", and then zipped it. this should enable you to download the file.
When you download and unzip the file, simple change the file extension back to ".exe".

https://www.bodziosoftware.com.au/UltimateEqualizer_MME_Marian.zip

Please refresh your browser page history.

Best Regards,
Bohdan

[dlr]

I use UE5 for my main 3-way dipole system. To provide some evidence of just how well the UE works, this is a measurement using HOLM Impulse of the midrange/tweeter section. I don't have one for the full system due to the issues with measuring a full range system with the woofer near the floor, but I have no doubt that the same results for the woofer/midrange would be confirmed.

First the on-axis response showing an overlay of the linear-phase (LP - red) setting vs. minimum-phase (MP - blue). Notice the change in phase response from MP rotation to LP (flat). Also, the impulse response for MP has typical overshoot with extended settling time while the LP has essentially none. The low end is limited by the gating required for my in-room measurement.



Next, the on-axis vs. 45 degree off-axis responses. There is rolloff due to the drivers, but fairly smooth due to the drivers and the diffraction control that I used. Still, the off-axis phase response has less than 25 degrees variation at this point which cannot be controlled separately, of course.



Two other points to make. The section above 20k (limited to 23.9k due to my measurement system Nyquist limit) is not corrected. The UE allow you to specify the range of correction. The tweeter has a severe ring above 20k (metal dome), so I don't have the UE correct that area since it would also drastically alter the response off-axis.

The second point concerns the fact that the on-axis SPL is not perfectly flat. That can be done with the UE as you can see at Bodhan's site. Mine is not because I used 1/6 octave smoothing on the measurements imported into the UE. I did this so that the wasn't correcting every little twist in the response that would also be in effect for the off-axis. I could have done that and it wouldn't have had too much effect off-axis, but that's primarily due to the diffraction control (felt) applied. But I still preferred to limit the amount of full SPL correction.

A third point, actually. The system above is LR8, linear phase. That allowed me to cross the tweeter at 1200Hz.

Given how cheap a used Win7 PC is (or having an old, unused one somewhere) and the Delta 410 or 1010 still readily found on ebay, it's definitely one of the least expensive approaches to a full DSP system with unmatched flexibility IMO.

I still do passive systems, but my dipole system requires DSP.

One last point. I use the UE for passive system early stage design. I make my measurements, import them into the UE, then try out every combination of crossover target and audition them. Once I decide on the best design, I use that target for the passive design. You can also audition designs if you have SoundEasy (which I do of course), but the speed and ease of using the UE makes it essential to me. You can literally audition dozens of designs in a day.

dlr

[bohdan]

Hi Dave,

Thank you for your excellent post. You got it right on all accounts.

I am getting similar SPL/phase results described in:

https://www.bodziosoftware.com.au/Linear%20Phase%20Loudspeakers.pdf

Best Regards,
Bohdan

[Brighe98]

My hp device that have windows 10 but sound quality are very bad, Mobile phone speaker are good compare to hp.