Little mixing room

Plans and things, layout, style, where do I put my near-fields etc.

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Soundman2020
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Re: Little mixing room

Post by Soundman2020 »

i mesuerd my old room at the hearingposition and was quiet shocked by the results. But see for yourself:
It's hard to see anything useful from just those graphs. You'll have to post the actual MDAT file somewhere that we can download it and analyze it.

You should also do the tests at a level of about 80 dB, not the 60 dB you are using right now.

What is clear from the graphs (and the photos) is that you are going to need a lot of bass trapping in your room.

The good thing is that the treatment you already build looks like it should be useful... But how is it built? What are those panels made of?


- Stuart -
TomessAI
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Joined: Tue Aug 24, 2010 9:22 pm
Location: Düsseldorf, Germany

Re: Little mixing room

Post by TomessAI »

Hey soundman,

thanks for your reply and sorry, that it took me so long to answere...

Here is the mdat file: https://www.dropbox.com/s/8k7tl94vddhpq ... m.rar?dl=0

And yes, i mesure at 60dB, because i don't know it any better...my mistake. Is it really so bad? Beacuse i think i can't redo the mesurement in the near future...

The pannels are made out of 8cm Rockwool Sonorrock (40 kg/m³), packt in 7µm plastic sheet. The cover is made out of Molton.

And yes, basstrapping is my goal, but i want to make it right!
TomessAI
Posts: 24
Joined: Tue Aug 24, 2010 9:22 pm
Location: Düsseldorf, Germany

Re: Little mixing room

Post by TomessAI »

Hey, did someone had the time to take a look at those mesurements? It could really help if someone have a opinion...i'm a bit stuck here, don't really know where to start with the treatment. I would love to have some formulars to calculate some absorbers etc... :oops:
Soundman2020
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Re: Little mixing room

Post by Soundman2020 »

I took a look at the REW data, but I'm not exactly sure what I'm looking at! There are 20 different measurements in that file, with cryptic names that don't mean much. I assume that the refer to locations in the room where the measurement was taken, but but "bottom front edge L" doesn't tell me much about that....

Also, the levels are still too low: there seems to be a lot of noise in the measurements, so I'm not even sure if they are 100% valid. By increasing the level to around 80 dB, you will be greatly improving the signal-to-noise ratio, and removing doubt about the validity of the readings.

There's no calibration file in there, so I assume that you didn't calibrate REW either.

So what you should do is to first calibrate REW, both for the actual sound level in the room (using a hand held sound level meter), and also for your sound card, then take a new set of measurements with the mic located at the mix position, exactly 1.2 meters above the floor, on the room center line, and pointing upwards at 45°. Do one test with just the left speaker at a level of 80 dB, then do another test using just the right speaker, also at 80 dB, then one more test with both speakers on, and without changing any levels at all.

Post that new MDAT file, and I'll take another look at it.


- Stuart -
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