Keith_W
Master Contributor
Thanks for jumping in. I was starting to run out of ideas.
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First REW measurement, please let me know what I can do better!
- Thread starter Waldemar-Johann
- Start date
OP
- Thread Starter
- #22
Hello Keith and hello to everyone else who is interested in this topic. Thank you very much for your input.
Regarding the current status, I have now rearranged my work/music area in the room itself. This means that I will take my first new measurements today and make them available later. I will also take these measurements tomorrow and the day after tomorrow. Here is my first question: are three measurements meaningful, or should I take more?
If I have understood marin.weigel correctly, should I always measure one speaker at a time and not both at the same time?
This means that I position the microphone in the seating area and take the measurement first with the left speaker and then with the right speaker?
I turned up the volume by about 10 dB using the interface's volume control and then did it again.
If that's wrong, then I don't know how to increase the volume.
I watched the video, but it didn't really help me.
Thank you again for your continued help.
All the best and nice weekend,
Waldemar
Regarding the current status, I have now rearranged my work/music area in the room itself. This means that I will take my first new measurements today and make them available later. I will also take these measurements tomorrow and the day after tomorrow. Here is my first question: are three measurements meaningful, or should I take more?
If I have understood marin.weigel correctly, should I always measure one speaker at a time and not both at the same time?
This means that I position the microphone in the seating area and take the measurement first with the left speaker and then with the right speaker?
Sorry for not labelling it correctly.
It's possible that I measured it incorrectly.
Done!
Here's what I did.
I turned up the volume by about 10 dB using the interface's volume control and then did it again.
If that's wrong, then I don't know how to increase the volume.
I watched the video, but it didn't really help me.
Attach your answer.
Thank you again for your continued help.
All the best and nice weekend,
Waldemar
Attachments
Last edited:
marin.weigel
Member
Yes, you have.
OP
- Thread Starter
- #24
In the appendix, you will find my first new measurement, separated into left and right.
All the best,
Waldemar
All the best,
Waldemar
Keith_W
Master Contributor
Funny that. Sometimes you have a problem, sometimes you don't. I don't know what more I can do to help, I am out of ideas.
Anyway, if you want to DSP, it looks as if the bass measurements are reasonably consistent.
OP
- Thread Starter
- #26
Good morning Keith,
Thank you very much for your reply and information.
Please don't despair!
The first measurements were taken with a microphone, which I may have used incorrectly. On top of that, I measured at a volume that was much too loud.
Thanks to you, I have now used the correct volume. This should be made clear to anyone who wants to take measurements. I wasn't aware of this!
Thanks to marin.weigel, who helped to make the measurement even more precise.
I will now take these measurements four more times and then post them here again to make sure that everything is now correct.
You write that it would be possible to do something with DSP under these circumstances.
I'm now taking two steps back and asking again, can I still make a significant improvement with room acoustics?
Does it make sense to include the subwoofer?
I am attaching a photo of what my room currently looks like.
All the best and a nice Saturday,
Waldemar
Attachments
marin.weigel
Member
Your room size, layout and construction is truly suboptimal, to say the least.
You've been shuffling your room setup around a bit, recently.
Did you experience any notable improvements at all?
Judging by the measurements I'd guess no!
First, try that mattress behind the desk/speakers horizontally vs. vertically in the current setup.
Then, try that mattress vertically behind the desk/speakers, set up at 45°, facing the corner between the walls without windows.
I'd guess this helps a bit to tame lower mids on down.
It's probably always a good idea to pull the curtains over the glass surfaces to help tame reflections a bit from the midrange on upwards.
Ideally put something on the ceiling to help diffuse reflections a bit from the upper mids on upwards.
Filled but not necessarily tightly packed bookcases, covering most of the walls' surfaces, always help a lot from between the lower mids to mids on up.
Due to the wavelengths involved, remaining problems from the lower mids on down must be tackled with DSP, but by cutting peaks only.
Nothing you can do for the throughs, other than changing placement of speakers and listener - not too practical in that size room.
Once gone through optimizing all the former, consider adding your sub to the picture.
You'll then soon enough recognize that this opens yet another can of worms ...
OP
- Thread Starter
- #28
Hello Marin,
Thank you very much for your feedback and information.
I will have to see which of these I can implement.
I know that the room is more than optimal, and ultimately it is my workspace above all else.
As the saying goes, ‘Einen Tod muss man sterben.’
I knew that this room would never be a dream studio. My goal is to make the best of what I have, if possible.
If I understand you correctly, the subwoofer will create more problems than it solves?
If that's the case, no problem, that's how it is.
Then the last option would be DSP, but it's not certain that this is the right way to go?
As for the curtains, I've done that.
All the best and a great Saturday,
Waldemar
Keith_W
Master Contributor
Since you already own subwoofers, you may as well use them.
But to be honest, with a setup like yours, I wouldn't really bother. Your speakers are behind you when you are using your PC, the room is too small, speakers are too close together. Up to now we still have measurements which are uninterpretable because of very poor signal to noise ratio. Just looking at the measurements of your noise floor, I would think there is a TONNE of noise where you are, but when I asked you about this previously you said there isn't much noise.
As a reminder of how bad we are at subjectively evaluating noise, this is the noise floor in my house right now. I think it's pretty quiet, all I can hear are the crickets, the soft hum of the fridge, and the gentle rumble of my gas heater. But look at that, it's up to 55dB. All rooms typically have a rising bass noise floor which your brain is very good at filtering out.
So ... *shrug*. I don't know.
But to be honest, with a setup like yours, I wouldn't really bother. Your speakers are behind you when you are using your PC, the room is too small, speakers are too close together. Up to now we still have measurements which are uninterpretable because of very poor signal to noise ratio. Just looking at the measurements of your noise floor, I would think there is a TONNE of noise where you are, but when I asked you about this previously you said there isn't much noise.
As a reminder of how bad we are at subjectively evaluating noise, this is the noise floor in my house right now. I think it's pretty quiet, all I can hear are the crickets, the soft hum of the fridge, and the gentle rumble of my gas heater. But look at that, it's up to 55dB. All rooms typically have a rising bass noise floor which your brain is very good at filtering out.
So ... *shrug*. I don't know.
marin.weigel
Member
What I actually meant was, that it'll be best to go one step at a time in a logical sequence to wring the optimum from what you have.
So first of all, fix room acoustics problems physically as best as possible to optimize measured results, and then,
secondly, use DSP to tame room mode peaks and tweak overall balance, and once that's done,
thirdly, add subwoofer(s) and physically best integrate to optimize measured results, to then,
lastly, use DSP once more to tame newly generated room mode peaks.
Trying to do all at the same time will just introduce more confusion and frustration than it'll help fix your issues.
Have a nice weekend yourself!
marin.weigel
Member
Now I read Keith's response ... okay ...
... you are trying to optimize the sound at your PC desk, and not in the speakers' near field, facing the speakers!?
OP
- Thread Starter
- #32
Hello Marin,
Thank you again for your feedback.
I would like to do that too.
That is why I am asking you for advice and will try to implement it as far as possible, not in parallel but one after the other.
All the best,
Waldemar
OP
- Thread Starter
- #33
No,
this is my workplace.
To make music, I turn around. For me, music is the hardware.
I have to improvise and make the best of the current situation.
All the best,
Waldemar
OP
- Thread Starter
- #34
Hello Keith, thank you so much for your feedback and information.
When I did the first recording last night, I couldn't even feel my breath.
I left the room, turned off everything I could think of, such as the lights etc, and let the speakers, microphone and software do their work.
I can place the speakers even further apart, where should I then sit in order to keep the length of the triangle to some extent?
All the best,
Waldemar
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OP
- Thread Starter
- #35
Good evening everyone,
I have now taken four more measurements.
Nothing has changed since the last measurement.
My concern here is that the measurements are correct.
After my vacation I will improve the room acoustically and then take a new measurement.
Many thanks in advance.
All the best,
Waldemar
I have now taken four more measurements.
Nothing has changed since the last measurement.
My concern here is that the measurements are correct.
After my vacation I will improve the room acoustically and then take a new measurement.
Many thanks in advance.
All the best,
Waldemar
Keith_W
Master Contributor
There is no need to ask us. Compare your current measurements to your previous ones and decide for yourself if they look the same. That's not hard to do.
OP
- Thread Starter
- #37
I'm back with my last measurement.
I couldn't change much about the room.
What I had imagined didn't work out.
It is what it is.
I couldn't change much about the room.
What I had imagined didn't work out.
It is what it is.
Keith_W
Master Contributor
I have written how to interpret REW measurements for you and others. Please read that, and have a go at reading the measurements yourself.
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