Audio Problems with Wedding Video at DVinfo.net
DV Info Net

Go Back   DV Info Net > Apple / Mac Post Production Solutions > Final Cut Suite

Final Cut Suite
Discussing the editing of all formats with FCS, FCP, FCE

Reply
 
Thread Tools Search this Thread
Old August 18th, 2004, 09:01 PM   #1
Regular Crew
 
Join Date: Mar 2004
Location: Lee's Summit, Missouri
Posts: 146
Audio Problems with Wedding Video

In short, I made a stupid mistake, and I'm hoping you guys can help me fix it :)

The wedding I shot two weeks ago seemed to go very smoothly. It was held at the church that I attend, and I know the audio guy. He gave me a line out cable to my camera from the sound board that gave me the audio from the pastor's mic and the piano. Perfect. well, I tested it with the GL2 during the rehearsal, sounded fine through the headphones. However, during the wedding the camera recording this audio was an Optura 500 instead. Of course, I forgot the headphones on the day of the wedding (I know I'm stupid, you don't need to tell me again). Since I had no problems with the GL2, I just set up the Optura the same way.

Now, after the wedding, I find that the audio has a low buzz over it. The audio picked up and sounds fine (really good, actually) ...if only I could get rid of that damn buzz. Is there a way to reduce this in FCP and still retain a useable audio signal?

Also, one of my other cameras was placed next to a speaker that was playing the same audio signal sent in to the Optura. It picked up all the music perfectly, but the voices - the pastor's, specifically - seemed somewhat "muddy" and had a sort of echo to it. It does not sound near as good as my line in audio under the buzzing noise.

If anyone could help me either reduce the buzzing from the Optura's audio or tweak the audio from the other camera to reduce the echo, I would greatly appreciate it. However, I know that as a general rule, you can't do much to fix bad audio, so I'm not expecting a miracle here, but its always worth asking!
__________________
www.interactiverecipes.com
Chris Wright is offline   Reply With Quote
Old August 18th, 2004, 10:20 PM   #2
Inner Circle
 
Join Date: Jun 2003
Location: Toronto, Canada
Posts: 4,750
If it's buzz from a ground loop you might be able to reduce the buzz with a comb filter.

http://www.dv.com/dv_login.jhtml?_requestid=34797
http://www.dv.com/news/news_item.jht...equestid=34855
*Registration required.

You probably need to export your audio to an audio app, especially if you don't have FCP4.
Glenn Chan is offline   Reply With Quote
Old August 18th, 2004, 10:32 PM   #3
Regular Crew
 
Join Date: Feb 2002
Location: Lousana, Alberta, Canada
Posts: 146
I have had great success using FCP's Hum Remover filter.

First you have to figure out the frequency of the buzz. Open your clip in viewer and look at the wave form of the buzz in a part of the clip where it is isolated. Zoom in to max and count the number of cycles in one frame. Multiply the number of cycles per frame by 30 to get the cycles per second. Enter this number as the frequency in the Hum Remover filter that you have dragged into your clip. Check off the first harmonic for good measure and render. This should remove the buzz or hum without damaging your other audio.

I hope this works for you. Good luck!
__________________
Nature Boy
Phil French is offline   Reply With Quote
Old August 19th, 2004, 06:27 AM   #4
Regular Crew
 
Join Date: Mar 2004
Location: Lee's Summit, Missouri
Posts: 146
thanks so much for your help... that really looks promising.

I do have Final Cut Pro 4 (HD) as well as Peak DV 3 (which I think came bundled with FCP 3). If you guys think I'll have better luck in peak, I'll try that. If not, I'll try the comb filter or hum remover.

Unfortuneately, the audio track I'm talking about is still on a DV tape, and , my GL2 is being sent in for repair :(
who knows how long it will be before I can import this tape and try to fix it. Maybe I can borrow a friend's DV camera...

thanks again!
Chris
__________________
www.interactiverecipes.com
Chris Wright is offline   Reply With Quote
Old August 23rd, 2004, 11:07 AM   #5
Regular Crew
 
Join Date: Mar 2003
Location: Dublin, Ireland
Posts: 90
Would suggest that you get the audio file into an audio app like Logic and then use some sharp equalisation to reduce the buzz (parametric EQ with a sharp Q Value).

You might be able to get decent results with only slight artifacts (which could be covered up with the good background feed you have from the PA)

Regards P
__________________
Sony PDX10 by 2, DRS-11, Dual G5, FCX, DVDSP and Logic Plat.
www.VarsityMusicVideo.com
Patrick Grealy is offline   Reply With Quote
Old August 24th, 2004, 03:34 AM   #6
Inner Circle
 
Join Date: Oct 2001
Location: Honolulu, HI
Posts: 2,054
Chris...

Try the hum removal filter in FCP 4. There's options to select harmonics, too, and certain combinations of those settings might work, too.

I had a couple of clips from other sources which had a 60 hz hum and this filter made it passable. Not great, but not horrible, either.

Dean Sensui
Base Two Productions
Dean Sensui is offline   Reply With Quote
Old August 25th, 2004, 10:26 AM   #7
Regular Crew
 
Join Date: Apr 2003
Location: Calgary, Alberta, Canada
Posts: 41
I have completely fallen in love with Bias software's SoundSoap. If you have three seconds of noise without people speaking, it will clean that audio like you could if you were a pro. I am always hassling videographers to make sure they have given me a "room tone" from any event so I can take advantage of the excellant auto cleaning feature of SoundSoap.

It can be adjusted manually as well, but again, I don't want to know what is doing or how it is working. I just want the noise gone.
__________________
Duane E. Martin
Earth to Sky Productions
Apple Certified Trainer - FCP
Duane Martin is offline   Reply With Quote
Old August 25th, 2004, 12:10 PM   #8
Regular Crew
 
Join Date: Mar 2004
Location: Lee's Summit, Missouri
Posts: 146
that soundsoap sounds interesting... do you know if there is a Mac OS X version of it, and how much it costs?

Also, I have been trying the hum remover and parametric EQ filters mentioned here, as well as the 3 Band Equalizer... and havent had much luck. I think the buzz may be too loud in the first place, and it just won't go away

Oh well...
__________________
www.interactiverecipes.com
Chris Wright is offline   Reply With Quote
Old August 25th, 2004, 01:52 PM   #9
Regular Crew
 
Join Date: Apr 2003
Location: Calgary, Alberta, Canada
Posts: 41
Chris, I would suggest Googling SoundSoap for answers.
__________________
Duane E. Martin
Earth to Sky Productions
Apple Certified Trainer - FCP
Duane Martin 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...

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

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


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 > Apple / Mac Post Production Solutions > Final Cut Suite

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 01:30 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network