Ever Persistent Mic Static

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Screech1989
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2011/02/03 00:08:33 (permalink)

Ever Persistent Mic Static

Hello Fellas,
 
   I have a mic static problem that I can't seem to figure out, which I'm usually able to fix. There is a white noise coming through my headphones ontop of any audio captured by the mic. The mic is fed into a mixer which is then fed into the mic input on my Delta 1010LT card. I feel like it's something really simple that I haven't thought of for whatever reason. Any suggestions?
 
-Clay
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    CoteRotie
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    Re:Ever Persistent Mic Static 2011/02/03 00:26:12 (permalink)
    Tube mic?

    Wait, wait, what key is it in? 

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    #2
    ohhey
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    Re:Ever Persistent Mic Static 2011/02/03 00:46:18 (permalink)
    Screech1989


    Hello Fellas,
     
       I have a mic static problem that I can't seem to figure out, which I'm usually able to fix. There is a white noise coming through my headphones ontop of any audio captured by the mic. The mic is fed into a mixer which is then fed into the mic input on my Delta 1010LT card. I feel like it's something really simple that I haven't thought of for whatever reason. Any suggestions?
     
    -Clay


    Might have it hooked up wrong. If the mic is already hooked to a mixer it doesn't need another mic preamp stage. Set the 1010LT input to "line" level not mic level.  Also, check the gain stages on the mixer and use as little of the mic gain as you can, the upper level of the gain might be noisy. So back off the gain if it's up high. Then boost a little more with the mixer unless you are using a direct out. Set the input of the 1010LT up all the way and start with the gain on the mixer channel all the way down and slowly move it up till you get good levels. If it's still noisy use one of the other outputs on the mixer that has some level control so you can boost it some there.
    #3
    siris1977
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    Re:Ever Persistent Mic Static 2011/02/03 01:15:11 (permalink)
    Your problem with "static" is in the delta 1010 pci card / interface driver.   I really can't go into more detail that, but I can say that you aren't the only one with delta "static" issues. 

    Your using a win 7 64bit machine. correct?     

     
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    NW Smith
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    Re:Ever Persistent Mic Static 2011/02/03 09:48:51 (permalink)
    1st off - check your mixer.  What are your levels set at?  If they are too high - or if you have the FX sends and returns set too high - this could be the culprit. (Some mixers like Behringers - especially with built in FXs - are notoriously noisy.

    If the levels are fine on the mixer,  the best way to try to solve these types of issues is through the process of elimination.  Do you have a 2nd mic you can test? (To determine whether the issue is with the mic itself - or if it's an issue with your signal path.  If you can test another mic  and find you still have a problem - then double check your cables.  (Also as Frank mentioned - make sure you have the soundcard levels set properly. (FYI: I have a regular Delta 1010 - and it is very quiet.)

    Good luck and keep us posted!

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    Rbh
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    Re:Ever Persistent Mic Static 2011/02/03 18:14:26 (permalink)
    Isolate if it's the mic or not. You haven't said what type of mic you have. If it's a condensor - then switch it with a dynamic to isolate if it's an electronics problem with the mic.

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    Screech1989
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    Re:Ever Persistent Mic Static 2011/02/07 22:30:46 (permalink)
    Thanks for the replies guys. The mic is a MXL 4000 condenser. I tried it after uninstalling the m-audio drivers and that didn't seem to have any effect. The levels on the mixer aren't the problem, this much I know. I've misplaced the drivers that came with the Delta, but I dl'd the 64 bit driver (for 64bit Win. 7). Is it possible that trying a different driver could solve this static I'm hearing?
     
    P.S. I've tried a couple different mics, and it's definitely not the mics that's causing it.
    post edited by Screech1989 - 2011/02/07 22:39:45
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    Guitarhacker
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    Re:Ever Persistent Mic Static 2011/02/08 07:45:05 (permalink)
    The way to trouble shoot stuff like this is to first... remove ALL inputs to the soundcard. Is the noise still there? If so, it's not coming from outside the computer... the mic, preamp, mixer, are all likely OK.

    If the noise does go away.. then connect the items one at a time moving outwards to the last item, the mic.  When the noise shows up, you found  the culprit.

    If it is in the sound card... try a different sound card....or at the very least, update the drivers....unless you did that and the noise appeared, in which case roll back the drivers.

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    #8
    Screech1989
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    Re:Ever Persistent Mic Static 2011/02/22 22:50:26 (permalink)
    Okay, so I'm back. Here's a link so you can better see the ins and outs of this card: http://www.m-audio.com/products/en_us/Delta1010LT.html
     
    Here's a link to an audio snippet of the kind of static I'm hearing: http://rapidshare.com/files/449385018/Rehearsal__Audio__Rec__9_.mp3
     
    Any ideas what this crackling sound could be? Any time any audio is received by the mic, it makes that "peaking" sound.
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    Shadow of The Wind
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    Re:Ever Persistent Mic Static 2011/02/23 02:08:07 (permalink)
    A problem in the digital domain (driver) typically sounds brighter. I would think that this is something in the analog domain or interference.
     
    Try it without the mixer. Your card has a mic input. So, it should work. (Does it have phantom power?)
     
    Or, connect headphones to the mixer. If you don't hear the same noise, route the master out of the mixer to the line in of you audio interface. The mic input may be bad.
    If you do hear the same noise, then it is interference, or the mic, or the mixer, or the cable.
     
    As somebody else said before: you should not route the output of the mixer to a mic input (unless there is a direct out before the mic preamp which means that you are not actually using the mixer).
    Especially, do not connect any ouput of the mixer to a mic input if the phantom power is enabled.
     
    Wilko
     
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