Why do I need a mixer? Answered at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > All Things Audio

All Things Audio
Everything Audio, from acquisition to postproduction.


Reply
 
Thread Tools Search this Thread
Old February 21st, 2007, 04:23 AM   #1
Inner Circle
 
Join Date: Nov 2004
Location: Baltimore, MD USA
Posts: 2,323
Why do I need a mixer? Answered

Hi,

I get asked this question a lot. This time I thought I'd take a proactive position and post it.

Mixers are more than knobs that let you vary the volume.

1. They let you vary volumes without shaking the camera or getting in the way of the camera op.
2. You may need to do that a lot with some people. I ride gain even if one person is talking if their voice fades on the end of each line. You can only do this in a relatively quiet environment, otherwise you bring up the ambient noise.
3. Mixer preamps (good ones) sound better than camera preamps.
4. Good mixers have input transformers that scrape off RF before it get into your audio.
5. Good mixers have limiters that allow you to record hotter, keeping your audio further above the noise floor without distorting.
6. Good limtiers have EQ that lets you roll of LF HVAC noise before it gets into your audio.
7. Good mixers have mulitple outputs so you can feed more than one camera, or separate recorder simultaneously.
8. Good mixers make your sound better. If they didn't pros wouldn't use them.

Hmm, is this a sticky or what?
Ty Ford is offline   Reply With Quote
Old February 23rd, 2007, 09:08 AM   #2
Inner Circle
 
Join Date: Jun 2003
Location: Toronto, Canada
Posts: 4,750
Quote:
6. Good limtiers have EQ that lets you roll of LF HVAC noise before it gets into your audio.
IMO this is better done in post, where you can play around to avoid affecting the voice too much and you can play around with NR plugins that do a better job. Lo-cut however is useful in some situations to avoid overloading other parts of the signal chain.

That being said, you can probably get away with almost never using the locut, or always leaving it on (I've heard of one sound person who simply always leaves it on).

2- That being said, having a mixer is useful in many situations.
Glenn Chan is offline   Reply With Quote
Old February 23rd, 2007, 10:08 AM   #3
Major Player
 
Join Date: Oct 2006
Location: San Diego, California
Posts: 505
Quote:
Originally Posted by Ty Ford
Hmm, is this a sticky or what?
I think so, nice job Ty - I didn't find it at all obvious why mixers were being used in this context when I started out.
Greg Quinn is offline   Reply With Quote
Old February 23rd, 2007, 01:22 PM   #4
Major Player
 
Join Date: Aug 2002
Location: Albuquerque, New Mexico USA
Posts: 287
Great post, Ty!

One other point (it's obvious):

Mixers let you use more microphones than you have input channels on your camera.
Ralph Keyser is offline   Reply With Quote
Old February 23rd, 2007, 11:34 PM   #5
Major Player
 
Join Date: Aug 2006
Location: Petaluma, CA
Posts: 456
Amen

Beautifully said, Ty. One might summarize by saying a mixer is the ounce of prevention that saves a pound of cure in post.

Warm Regards, Michael
Michael Nistler is offline   Reply With Quote
Old February 23rd, 2007, 11:55 PM   #6
Inner Circle
 
Join Date: May 2006
Location: Camas, WA, USA
Posts: 5,513
Quote:
Originally Posted by Michael Nistler
...One might summarize by saying a mixer is the ounce of prevention that saves a pound of cure in post...l
Of course, that depends on who's operating it. ;)
__________________
Jon Fairhurst
Jon Fairhurst is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > All Things Audio

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 07:03 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network