I used the speaker set up in the in-room and was quite satisfied. But I had no choice but to dispose of the speaker because of my family and various personal reasons.
And I started using various headphones. (Koss KSC75 / Sony MV1 / Sennheiser HD600 / Sennheiser HD800s)
While enjoying music like that, I learned about binaural and impulcifer things.
A few months ago, I carefully asked a senior user who has a very good room in Korea, so I enjoyed replicating the sound of the room. (Perfect REVEL speaker)
But I always had a desire for something clearer, something I could control... In order to solve it, i eventually measured it myself.
Of course, I was already experiencing a crazy experience by adding a measurement from the reflection angle separately to the response I was using and applying binaural reverb to it. But everyone is greedy.
And the following is part of the process that I've been doing so far. There are so many things to do in the future. an uncharted world
I used a Generec speaker previously but disposed of it, and this time I bought a 305mkii speaker from JBL for binaural. (Of course this was not a very good choice.)
I measured Onaxis at a height of 2m from the rooftop and made my own filter in advance to correct the deviations and problems with my speakers.
And I waited for months to prepare and plan where and how I would measure and prepare again.
What I was able to try and be confident about was that I could mix the responses I wanted by mixing impulcifer with REW and audacity properly.
And you can apply as many corrections as you want to be more flexible than the situation in the in-room.
But the most important thing is that you rarely need that kind of correction, and it's best to get pure sound, right?
However, ordinary people cannot live in a fragrance-free room. Furthermore, we hear reflections as well as direct sounds.
So... I rented a soccer field and a big gym(or hall? whatever) in my town.
weather is really nice.
But there were a number of problems.
Software issue with topping E2X2 at the time. Noise floor outdoors (it was too noisy around). And there were many mistakes, so the measurement on this day was too difficult, but I couldn't use a single one. So I was in despair.
And I prepared and prepared for a few more days (body and mind). Information. Knowledge, everything I need)
It was quite quiet here. And this day was even quieter because I took the test at high schools all over Korea. (On this day, the plane doesn't even move at a certain time.)
I had written down the whole process on a piece of paper and kept checking.
Btw, microphone I used is Samson's LM-10X.(With Rode VXLR) 2pair.
Also Umik-1 (for Check and Match Speaker Level, Impulse)
Measurements were made at 1m / 1.3m / 2.4m / 3m / 7m when held large , and specific angle arrangements and distances for experiments were also attempted in the middle.
Speaker height/measurement and ear height is 2m.
I think the picture above is about 1.3m.
I bought a small mirror the day before at Daiso and checked the reflection point with a mirror on the ladder to place the sound-absorbing material(basstrap), and about 1 to 1.5m, it was covered with one sound-absorbing material (1m). Glass wool
So, floor reflection absorption was performed with 500mm Glass wool, and after that, it was divided into 250mm at a distance above that.
I've already marked the protractor and the specific angles I want on the ladder.
And i've also experimented with a lot of things that aren't normal stereo angles.
To effectively remove crosstalk (XTC), bring it closer to mono, but not at any angle
Referring to various data, we tried to arrange them in various ways, such as an 8 degree angle. I remember that the distance was about 2.7m? 3m.
As shown in the picture, all arrangements were laser-adjusted toe-in angles except for more than 3 meters, temporarily distance-adjusted with tape measure, and the speakers and speakers were adjusted accurately once again using a laser thermometer. (It's a part that helps ITD reunification)
It doesn't look that far in the picture, but it's about 7 meters. The XLR cable was 10 meters long, so I could afford it, but the speakers and stands were so unstable that I took it here. Even if you go more than that, the performance of 305 won't support you. (Compress Gurley used it all up to the maximum level and later found the Maginot line volume and increased the microphone amplification a little more. The headroom fell a bit, but it was indoors, so there was no problem with the file itself.)
And it's one of the reflection angles collected at different distances. The reflection was measured by turning a 360 degree angle at a 5 degree angle, and I put an eyeglass case behind the speaker to tilt it
It was so unstable that I only did one height layer. (72 measurements of ear height, 72 measurements of height channel higher than ear height)
And as in the picture above, I shot the speaker directly on the wall or looked at the ceiling. I ran out of sound pressure and used up to the limit of 305 speakers today (I actually hear the distortion even in the sweep)
But the reflections were very satisfactory. The most important thing is the reflection measured to fit my ears and I really like the amount of the initial reflection itself.
I think it will be a reflection IR with a length of approximately 1.4s, and it would be good to process it well.
And........
I got really clean sound fit my ears. -47db lol (This messurement IR file from 2 or 2.4 meter)
And it's a response when my speakers and direct bass are combined. very clean. (Never mind the low-frequency boost or not. I can raise it as much as I want.)
And this is my ears messurement. It's a different response from the umik mic, right?But this is how I hear (face, shoulder, etc.).
I previously thought of a 50 Hz crossover, but I changed it to 90 Hz. The target is LR4.
And it's my response that I got really cleanly. Too clean and sharp.
Glad to see it's not just me.
