danielson
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Help with mixing frequency analysis
Hey Guys, I need some advice/guidance on the positioning of my studio monitor speakers. The speakers are active behringer truth's 2031A. When I run pink noise through the speakers and then record the frequency back in I get a fairly flat eq curve until it gets to around 120hz where is dives off into nothing. The reason why i'm doing this is because im not getting a great bass response from my speakers.
How can I improve my bass frequencies?
Daniel
P.S. Can you insert pictures into your posts?
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d_in_conduct
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RE: Help with mixing frequency analysis
2006/04/23 22:07:29
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How are you recording the noise?
If you're using your microphone, look up the frequency response curve for the mic first and see how accurate a picture you're getting of your monitor output.
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danielson
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RE: Help with mixing frequency analysis
2006/04/23 22:22:37
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Im recording with a Rode Nt1 microphone, and I can't get a frequency response curve for this mic. its a condenser microphone.
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papa2004
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RE: Help with mixing frequency analysis
2006/04/24 02:59:45
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ORIGINAL: danielson
Hey Guys, I need some advice/guidance on the positioning of my studio monitor speakers. The speakers are active behringer truth's 2031A. When I run pink noise through the speakers and then record the frequency back in I get a fairly flat eq curve until it gets to around 120hz where is dives off into nothing. The reason why i'm doing this is because im not getting a great bass response from my speakers.
How can I improve my bass frequencies?
Daniel
P.S. Can you insert pictures into your posts?
What kind of setup (room dimensions, equipment placement, monitor placement, etc.,) are you dealing with...These factors can affect all frequencies... Have you tried using a Sound Level Meter unit to test your speakers' response in the room? Unless your room is furnished with tons of filled bookcases and a lot of pillows in every corner, I don't know why you would notice a significant frequency drop at 120Hz...Most project/home studios need to add bass traps to reduce the resonance produced by the standing waves of low frequencies... P.S. Yes you can insert pictures in a post...Like this one that illustrates the equi-triangle theory of positioning nearfield monitors... Actually, that isn't a picture, it's a scan of an AutoCAD drawing that I did for another thread...But a JPG file of a photo would work the same way...So, if you have a picture of your setup please post it and perhaps we might notice an obvious problem related to your bass response dilemma...
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danielson
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RE: Help with mixing frequency analysis
2006/04/24 05:21:28
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I have taken photos of my studio but don't know how to include them in a post?
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papa2004
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RE: Help with mixing frequency analysis
2006/04/25 00:47:37
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ORIGINAL: danielson
I have taken photos of my studio but don't know how to include them in a post?
You'll need to scan them to get them converted to JPG (if you used a digital camera you can simply load them into a file folder on your computer), then you need to have an internet site you can upload them to...To insert an image, click on the "image" button in the window that you use to post replies or start a new thread...
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papa2004
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RE: Help with mixing frequency analysis
2006/04/25 02:25:12
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ORIGINAL: danielson
Im recording with a Rode Nt1 microphone, and I can't get a frequency response curve for this mic. its a condenser microphone.
Here's the freq repsonse curve for the NT1-A (from the RODE website): If you had the mic placed properly, you shouldn't have had any problem getting a decent low-end repsonse...(Notice the slight "rise" on the graph in the 100-120Hz range and otherwise fairly flat response descending toward the 20Hz mark)... Your bass response problems lie elsewhere. Sorry I can't tell you exactly where...
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rolo95
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RE: Help with mixing frequency analysis
2006/05/04 13:31:10
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daniel... post some pics of your studio and... also post a DRAWING of the rooms... ( like a blue print ) wehere we can see you room actual dimension.... Width Lenght HEight... btw.,.. you can go to this site and read some very usefull info... www.realtraps.com waiting for your pics and draws... Rolo.
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krizrox
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RE: Help with mixing frequency analysis
2006/05/04 13:59:01
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How do you have the rear panel switches set?
Larry Kriz www.LnLRecording.com www.myspace.com/lnlrecording Sonar PE 8.5, Samplitude Pro 11, Sonic Core Scope Professional/XTC, A16 Ultra AD/DA, Intel DG965RY MOBO, Intel Core 2 Duo E6600 2.4GHz processor, XFX GeForce 7300 GT PCIe video card, Barracuda 750 & 320GB SATA drives, 4GB DDR Ram, Plextor DVD/CD-R burner.
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DonnyAir
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RE: Help with mixing frequency analysis
2006/05/04 15:27:23
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and... in relation to Kriz's question regarding the freq switches on the back of your monitors, do you have a low end roll off switch engaged on the mic?
I'm not familiar with your mic so I'm not sure it even has this function...just askin'.
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papa2004
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RE: Help with mixing frequency analysis
2006/05/04 16:29:21
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Donny!
Haven't heard from you in a while! Everything okay on your end?
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DonnyAir
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RE: Help with mixing frequency analysis
2006/05/04 16:46:19
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Just fine Papa.... thanks for askin'... Been busy writing, gigging, doing voice overs, etc... It's all good...  D.
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papa2004
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RE: Help with mixing frequency analysis
2006/05/04 17:31:54
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Good to hear, Donny... Your presence has been missed (lots o' ??'s from users who are REALLY new to all of this DAW stuff...) We've needed a veteran like you to jump in and help out! 
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danielson
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RE: Help with mixing frequency analysis
2006/05/04 18:35:33
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Hey Guys, Thanks for your reply's. I fell a bit silly as I just discovered that I had a bass rolloff switch enabled on my mixer. I have taken this off and get the following response (Figure 1) from the pink noise outputted in figure 2. Can you give me any feedback on this response? I will submit a picture of my home studio soon, its too hard to take a good photo of the room so I will draw a picture. Thanks Daniel  
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danielson
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RE: Help with mixing frequency analysis
2006/05/04 18:37:40
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Hey Papa,
I have a rode NT1 not the NT1-A, I cant find a frequency response diagram for my mic are these basically the same? I heard that the NT1-A is quieter etc.
Regards Daniel
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danielson
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RE: Help with mixing frequency analysis
2006/05/04 18:40:12
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The speakers have rear switches and I have them pushing bass at the normal output trim odb. the range is from 0db to -4db I think, so i have it at its highest.
Daniel
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jacktheexcynic
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RE: Help with mixing frequency analysis
2006/05/04 21:17:22
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ORIGINAL: krizrox
How do you have the rear panel switches set?
i was just gonna ask this. i have the 2031a's as well. the switches make a noticeable difference. i've never done pink noise measurements but since it covers multiple frequencies (as far as i can tell) then it would make sense that once the mean frequency (are you measuring by the middle freq or the fundamental?) starts getting low then the complete response would get lower. but then i'm not an expert on pink noise. =)
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rolo95
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RE: Help with mixing frequency analysis
2006/05/05 00:57:58
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ORIGINAL: papa2004
Donny!
Haven't heard from you in a while! Everything okay on your end?
Same here!  Rolo
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THERE IS NO POWER Without KNOWLEDGE !!!
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