FCP-high audio hum...help at DVinfo.net

Carl Metzler · January 7th, 2003, 06:19 PM

Just shot some interviews in-house with a hard wired mic, thru a mixer & into XL1s...
I just noticed there is a pretty high pitched background noise thru most of the footage.
FCP's filters seem to do nothing for this..any ideas????
I opened the clip into Peak DV & tried a few of the things I usaully do to fix it like normalize, eq, etc...any ideas for this also?
Are there any plug-ins for FCP that actually work?
Help me...Please!!!
Carl M.

Michael Westphal · January 7th, 2003, 08:51 PM

Carl,

At the very least, you should be able to use a low pass filter. Set the Frequency as high as you can till you hear the background noise, then drop it down a bit till the noise goes away.

And make sure you are filtering BOTH channels!

Michael

Ken Tanaka · January 8th, 2003, 12:59 AM

Carl,
You may find Peak's tutorial on noise reduction a useful read, too. You'll find it in PDF format on their site.

Phil French · January 10th, 2003, 03:22 PM

I have had good luck using the Hum filter available in FCP. Open the audio tracks of your clip in the viewer and zoom into a frame that contains only the hum. Count the number of cycles for one frame and multiply by 30. Enter this number as the frequency in the hum filter, check off the first harmonic. You may need to play with the Q. This should remove the hum from your clip with little damage to your over all sound. Good luck.

Chris Sweet · April 28th, 2008, 02:27 AM

. . .. .Z-Noise. .. . . (edit: didnt realize this thread is 6 years old lol)

January 7th, 2003, 06:19 PM	#1
Carl Metzler Tourist Join Date: Dec 2002 Location: Roseburg, Oregon Posts: 2	FCP-high audio hum...help Just shot some interviews in-house with a hard wired mic, thru a mixer & into XL1s... I just noticed there is a pretty high pitched background noise thru most of the footage. FCP's filters seem to do nothing for this..any ideas???? I opened the clip into Peak DV & tried a few of the things I usaully do to fix it like normalize, eq, etc...any ideas for this also? Are there any plug-ins for FCP that actually work? Help me...Please!!! Carl M.

January 7th, 2003, 08:51 PM	#2
Michael Westphal Regular Crew Join Date: Jun 2002 Location: Baton Rouge, LA Posts: 166	Low Pass Filter Carl, At the very least, you should be able to use a low pass filter. Set the Frequency as high as you can till you hear the background noise, then drop it down a bit till the noise goes away. And make sure you are filtering BOTH channels! Michael

January 8th, 2003, 12:59 AM	#3
Ken Tanaka Retired DV Info Net Almunus Join Date: Dec 2001 Location: Chicago, IL Posts: 6,943	Carl, You may find Peak's tutorial on noise reduction a useful read, too. You'll find it in PDF format on their site. __________________ Lady X Films: A lady with a boring wardrobe...and a global mission. Hey, you don't have enough stuff! Buy with confidence from our sponsors. Hand-picked as the best in the business...Really! See some of my work one frame at a time: www.KenTanaka.com

January 10th, 2003, 03:22 PM	#4
Phil French Regular Crew Join Date: Feb 2002 Location: Lousana, Alberta, Canada Posts: 146	I have had good luck using the Hum filter available in FCP. Open the audio tracks of your clip in the viewer and zoom into a frame that contains only the hum. Count the number of cycles for one frame and multiply by 30. Enter this number as the frequency in the hum filter, check off the first harmonic. You may need to play with the Q. This should remove the hum from your clip with little damage to your over all sound. Good luck. __________________ Nature Boy

April 28th, 2008, 02:27 AM	#5
Chris Sweet Regular Crew Join Date: Apr 2008 Location: Vancouver Canada Posts: 89	. . .. .Z-Noise. .. . . (edit: didnt realize this thread is 6 years old lol)