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  Topic Review (Newest First)
07-27-13 05:40 AM
BLUEBOY12
Re: Graphs and response time translation would be appreciated

Hey there,
you're the 3rd person to tell me this, so now I must take notice!
My only reasoning I can think of for my rt60 being so low, is that I made my own DIY bass traps some months ago without doing proper research.
So, at the time ,I bought a whole load of rockwool (which I now believe to be the wrong kind of rockwool)
And now I guess, its sucking the life out of my room .
But, strangely enough, my room doesn't sound dead or weird...(in my opinion)
I am not a technical guy ,so I don't really know what a good reading should be at 1kHz.
I don't understand "What is room volume in M3" either!
Could you tell me if there are any pitfalls for trying to mix in a room with these rt60 readings?
I've read a few threads, but it seems like a very subjective topic.
Any help or feedback is much appreciated
Cheers.
07-26-13 07:24 PM
mc_lover
Re: Graphs and response time translation would be appreciated

WOW how come Rt60 in this room is very low .0.2 at 1kHz. I have never seen RT60 so low like this.
What is room volume in M3?
07-10-13 03:34 PM
BLUEBOY12
Re: Graphs and response time translation would be appreciated

Just remembered!
Through REW, i have only recently come across "monitoring at the right levels"
which is a concept i had no clue about.
Ive read that 85 dB SPL is a recommended listening level.
This could possibly factor into why my mixes didn't translate well.
(i'm not prepared to say i'm a bad mixer yet!)
I'll also incorporate this approach and see if there is any difference.
07-10-13 03:20 PM
BLUEBOY12
Re: Graphs and response time translation would be appreciated

Thanks alot for the threads. (bought the wrapper)
What i recorded,using ARC 2, did not translate well at all to other systems.
To me,when ARC 2 is on,music (or recorded takes) sound extremely pristine.
its like its doing more than "eq balancing"
almost like some sort of harmonic saturation (hard to explain)
but it just sounds very polished.
and when played on other systems, the mix falls apart.
Ive managed to remove the long reverb tail at 40hz on the waterfall graph,
and Ive cured the dip at 3-6khz and at 60hz simply by moving things around in my room.
the other problem frequencies still exist.
Im thinking,maybe those problem frequencies around 160hz - 500hz are too much for ARC 2 to handle.
BUT!...Im going to follow your advice,redouble my efforts with arc 2
and see if these minor adjustments make any difference.
Just been on IK MULTI MEDIAS forum ,and not 1 thread about ARC 2. A bit odd.
I'll start a thread there soon.
Your advice is challenging and always helpful.
Cheers.
07-08-13 11:32 AM
EarlK
Re: Graphs and response time translation would be appreciated

ApEQ ?

I've had a demo copy of apQuilizr ( for quite some time ) .

It would work as a standin for the Equalizer APO . See this thread by Dozerbeatz to learn how he uses apQuilizr .
- Here's one of his videos ( where he talks about using apQuilizr on the output buss of one's DAW ) ;

http://youtu.be/Fa9qlB6LK4c

I'm pretty sure that apQuilizr's EQ filters are not settable via an ( imported .txt ) configuration file .
- One will need to create them from within the plugin .

I don't believe it'll work with Pro Tools though ( since apQuilizr is a VST based plugin ) .

See this thread over at AVID .


There is a VST-RTAS interpreter/wrapper available ( for $100.00 ) .



Mono ( correction ) EQ vs Individual EQ for each Speaker ?

Simplistically; since people listen with 2 ears / while a single mic p/u only represents a single ear at a single location ( rather than a Binaural capture . This is a tiny kernel of reasoning as to why I believe each speaker is best EQed individually .

I realize that Dozer does apply his correction EQ in mono ( & he likes it ) // so you might want to ask him if he's ever tried stereo correction .

Bottom line, do which one sounds best to you .

ARC System 2 ?

I believe that you should redouble your efforts to get Arc System 2 working properly for you ( ie; don't the publishers have a forum that you can join to solicit help from ? ) .


07-07-13 07:23 PM
BLUEBOY12
Re: Graphs and response time translation would be appreciated

See what happens when you miss those jedi mind reading classes?!
I'm running Pro Tools 9 on a PC (Windows 7 ,64 bit)
I've also come across a software plugin similar to Equalizer APO, but more suited to my needs.
Its called "apulSoft apQualizr" (http://www.apulsoft.ch/apqualizr/)
I believe I can use this on my "master bus channel" in Pro Tools (as a plug in)
and add the correction filters (in text format)
If you have a free moment, could you have a quick look at it and give me your initial thoughts about it.
I do have "Arc System 2" but I'm not happy with the results.
Over the last couple of days, I've been moving my speakers around,trying to find the best placement for them.
My room frequency curve has improved. (I'll attach a pic soon)
I have also run out of real estate for any more physical room treatment.
Finally,could you explain why and what the difference (or benefit) is, when measuring speakers individually?
(I'm struggling with the idea of 2 separate measurements)
cheers again.
07-04-13 10:53 AM
EarlK
Re: Graphs and response time translation would be appreciated

Please read my response from within your quote .

Quote:
BLUEBOY12 wrote: View Post
Hi there,
This time I bothered to read REWs auto EQ!
- Good !

It almost feels like I'm learning a new language.
My understanding is, I can inverse my rooms frequency curve, to match the flat response measurement.
- The necessary correction EQ is more than a simple inverse of your existing frequency response .

Then I will be able to export that info as a text file and use it by importing the measurements into EQUALIZER APO. (Am I correct so far?)
- More or less / the export might need to be a Wave file for a VST plugin ( within the PC world ).

The only problem is, I will be using PRO TOOLS.
- Okay !

I could be wrong, but I don't believe this software can be used as a PRO TOOLS plug in.
Would you know if there is an eq program (plug in) that enables me to import the text file measurements, and is also compatible with PRO TOOLS?
- Well, ( having not being gifted with mind-reading capabilities ) I'm forced to ask;

Just what type of Plug-In Architecture does your version of Pro-Tools employ ( there are a few ) ?

- That asked, I doubt if there's anything that will do the job that's available within the Mac world , that's also "free" ( if that's important to you ). Perhaps you've got a ProTools version, ( for PC ), that also uses VST plugins ( if one exists ) .

- Here's something applicable for ProTool users ( needing backwards/forwards compatibility for AVIDs audio plugins ;



Would I be right in thinking ,I could possibly use the inverse frequency curve (via an eq plug in) on the PRO TOOLS master output to record and mix?.
- You can put an EQ plugin ( correction filter ) on the buss feeding your monitors / you don't want to add this EQ to your mixdown , therefore the 2-track mix-down needs to be on a different buss ( or you need to defeat the EQ before committing signal to the 2-Track

I do also understand this is no substitute for room treatment as this approach wont cure reverb times etc.
- Your mix-rooms RT60 times are already very low ( too low, IMHO ) / I would be looking to increase them up to around 3 ms ( somehow ) !

Appreciate your time and help
- Your Welcome !

Cheers again.
07-03-13 02:15 PM
BLUEBOY12
Re: Graphs and response time translation would be appreciated

Hi there,
This time I bothered to read REWs auto EQ!
It almost feels like I'm learning a new language.
My understanding is, I can inverse my rooms frequency curve, to match the flat response measurement.
Then I will be able to export that info as a text file and use it by importing the measurements into EQUALIZER APO. (Am I correct so far?)
The only problem is, I will be using PRO TOOLS.
I could be wrong, but I don't believe this software can be used as a PRO TOOLS plug in.
Would you know if there is an eq program (plug in) that enables me to import the text file measurements, and is also compatible with PRO TOOLS?
Would I be right in thinking ,I could possibly use the inverse frequency curve (via an eq plug in) on the PRO TOOLS master output to record and mix?.
I do also understand this is no substitute for room treatment as this approach wont cure reverb times etc.
Appreciate your time and help
Cheers again.
06-27-13 06:13 AM
EarlK
Re: Graphs and response time translation would be appreciated




Quote:
BLUEBOY12 wrote: View Post
Hi there,
i now have numerous questions, (sorry!)
firstly, could u explain why u would use the 70db as the target reference?
using 70db as a ref would mean (for example) having to "lower" the 85hz resonance peek in my graph.
If i used 75db as a target reference ,the 85hz resonance peak would need to be raised.
this seems confusing to me.
- 70db ( vs 75db ) seems to be a nice half-way point ( between boosting lots of frequencies & cutting lots of other frequencies )

- My guess is that this pic ( capture ) is both speakers playing . If so , don't use it .
- As mentioned earlier, make some captures of individual speakers ( at your listening position ) & then use REWs Auto-EQ module to equalize the defiencies that you find .

Quote:

2. i also dont understand what u mean by limit "boost EQ" to 3-5 db (i seriously am a newbie!)
- That's a feature found within REWs Auto-EQ menu section ( that I asked you earlier to check-out ) . I guess you didn't bother to do so.

Quote:
Equalizer APO looks great...my approach will be to firstly add more bass traps and absorbers in my room, re measure it...(the tweak and re-measure approach!) then work out how to incorporate Equalizer APO for the bass frequencies if needed.
cheers again.
06-26-13 08:14 PM
BLUEBOY12
Re: Graphs and response time translation would be appreciated

cheers!
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