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Latest Training
Tech Know: Buzz Off
Understanding and Eliminating Audio Hum
Hosted by D. Eric Franks, Senior Editor
SEASON: 2 EPISODE: 205 RELEASE DATE: FEBRUARY 8, 2007
In the controlled chaos of a studio shoot, audio issues can be easy to miss. In the complete chaos of a location shoot, audio problems might be the last thing you are worried about. Back in the edit bay, however, bad audio will be impossible to ignore. In this simple, direct and pragmatic segment, Eric tells you what you need to know to make sure you have an electronically clean audio signal path from your microphone to your camera.
User Rating: 
4.61 (56 ratings)
User Views: 7040 User Views Today: 1
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- DJTV-TechKnow-s02e205-iPod
mp4 - 320x240 - 53 MB
Maximiliano Belli
FSM
45 User Comments
Very helpful. Eric, your show always has that fundamental information which is often hard to get along the way, but ready makes the difference when you run into a problem.
Wow That went fast!
Before I knew it, it was over. I was just thinking right before I saw this episode, "another ten minute DJTV"...then it was over.
I guess the right amount of information, with the right amount of examples, equals GREAT DJTV.
Thanks!
Thank you for helping to clarify the XLR to 1/8th signal / compatibility issues. Extremely informative episode! Keep up the awesome work!
Eric, this is very valuable information for any production. Bad sound will kill and otherwise great project. The information you are presenting is highly technical, scientific in nature and difficult to explain on a layman's level. I think you are doing an exceptional job getting the information out.
I also do not think there is a problem with what you are producing....your productions this season are light years ahead of last season, and you have really come into your own with your interaction with the camera. I think you have been given the unenviable task of teaching, what some consider a boring topic because of its highly scientific nature. I love this stuff...you do not "dumb it down"....and it is one of the key reasons why I keep watching.
Keep it coming!
Generally great info. Careful with the info on impedence, however. You only briefly mentioned it, then showed an example where you appeared to confuse Hi-Z and Low-Z (impedence) with signal levels (line and mic). Overall very good info, though. Keep up the good work.
Eric is absolutely correct -- audio is critical to a successful video project. This segment was especially useful. Plain English descriptions and solutions -- I love it.
Thanks! This was very timely. I am currently working on a documentary and voice overs are used constantly. Your info will help boost my signal. Thanks again for the direct box idea!
Great episode. I am always trying to get an edge on the audio front as its a mystery to most. I've seen in this field many a production come back to post with bad audio. I now require multiple sets of headphones and good, solid xlr cables.
Excellent! Thanks for explaining the "why" of a common problem and the providing solutions. Definitely one of your best segments yet!
AWESOME XLR graphic!
THis was awesome information that I NEEDED to know! I can't even explain, but your timing is PERFECT with this piece for me! THANK YOU!!
I just shot a self-interview and I got a lot of hum ... I had to reshoot the entire thing due to the hum ... these tips are very invaluable and I will use it in my future shooting for sure...
Thanks for the info on the XLR cable. I never knew that and I use them all the time when I perform music onstage.
This is your absolute best episode so far!!!! ... at least for what I am looking for. The information here is priceless to me at this point in my production phase. Excellent job Eric!!!!
D. Eric you rock! Wow, you just get more and more helpful and from a woman viewer I have to tell you that your wardrobe selection has greatly approved as well! Love the threads this week! I had this "Buzz" issue and you've enlightened me to a simple solution! Thanks again! Millie
Eric,
Awesome segment. I don't care about the fluff. I won't say that others weren't distracted by the bg music but I wasn't. I was too focused on what you had to say. I want real world solutions to real world problems and I like the fact that I now know what's causing the problems and how to avoid them regarding audio. I love all the DJ segments. Each one offers me something I can use and I love learning the tech part of my craft. You're a gift.
**** From me.
Thanks Eric, Beacktek is the one I have and if something goes wrong, just send it back to Canada and they fix it for you for about $50.00, It's worth it.
Thanks again Eric
JUST what I needed to know AGAIN Eric...I was having problems with my XLR-to-8mm plug...now I know why...Thanks Eric...you've saved me LOTS of money and headaches once again :-D
Very interesting, especially in that the information imparted is also applicable to direct audio needs as well as video. Take the input to a mixer for a large group, with snakes all over the place and direct electrical power inputs in older buildings... the mixer is used to port the audio to speakers, to a CD burner and to a camera. Yep, that ground hum normally present, due to the variety of power outlets being used, is eliminated with direct boxes just as indicated in this presentation. Thnx...
Thanks for the great explanation! I had not given any thought to cabling as a potential problem. Also, I enjoy your deliberate, slow and clean enunciation.
Thanks for the great explanation! I had not given any thought to cabling as a potential problem. Also, I enjoy your deliberate, slow and clean enunciation.
Eric's content is good, but the production values of these segments fall far below that of the others. It's more like a lecture. Let's get this segment up to the Digital Juice standard.
Nice! I always asked myself - where is that noise coming from? Thanks Eric! You're the man... Always good info. My favorite DJ program! Thank you! However, I have been preaching about that background music for awhile now.... Get rid of it or tone it reaaaaly down.... 4 Stars
Thanks Eric
Great info, but I found myself drifting off during it. The VO was very low compared to the "music" (or the music was to loud) and it was hard to concentrate on the message.
3 stars
Great Video, but please take that background sound off, please. The looping sound not easy to listen for 10 minutes.
That wall-to-wall music with the bullet ricochet sounds in it made me want to stick a fork in my computer speakers. It was way too loud and repetitive, I started losing track of what was being said by the halfway mark due to the music choice. There is no crime in dipping down to silence occasionally, or in transitioning to other music cuts. That music works okay for a :30 spot, but this was too long. Excellent presentation almost ruined by bad music choice and level.
Great! Very informative. Will this help in anyway with the mobile phone interference. Everyone has a phone and they are always on, so asking everyone to turn off phones doesn't work. any hints?
Excellent! Thanks Eric. I have wondered about the xlr connection issue on many levels - like connecting it to my PC, camcorder, etc. You answered all those questions and then some with this very, very informative episode. 5 stars!
I really enjoyed this clip a lot. I got a lot out of it and I will be going and buying me a Fast Track/M-audio box or direct box soon. Thanks!!