Again, on noise reduction

Gerax · 8th June 2007

Hi all

I'm working on the mix for a DVD of a live gig with a string quartet. I have some troubles with a static noise (bzzzzzzz) generated by the power supply of a spotlight (which is turned on and off when the players get on the stage). It's kind of high pitched and it seems a bit modulated. It's only heard during to softest passages, like in intros or coda (when only one of the musicians is playng, very soft) but since there's some speaking in between music to introduce the songs, I'd need to get rid of it. I really want to be as transparent to the music (all acoustic quasi classical) as I can be.
So far I tried with the standrd stuff, Digi DINR, Waves X-Noise and X-Hum, notch filters, but I feel that, even though I can get rid of much of the noise, I'm changing the sound a bit too much, particulary the "air" surrounding the musicians, which to me is key.

Any other suggestions or tricks I may try?

Thanx

L.G.

imgoinmad · 8th June 2007

I had a project with a similar problem. What I ended up doing was sampling the noise at a quiet section (between songs) with X-Noise. I simply reduced it less during the playing and a little more during the talking. I took it to the point before it adversely affected the recording. The sound is still there but was reduced enough that while I still hear it, nobody else seems to notice it. (kind of like when you paint your house and get the house color on the trim...nobody seems to notice it but you see it every time!)

The modulation is what makes this type of thing really difficult. I'd love to hear from others who've found good ways to kill this type of thing.

**DrDeltaM** · 8th June 2007

I might sound like a broken record (hey, let's fix that!), but Cedar Cambridge would fit your needs (can track moving buzz, and is designed with high fidelity like classical rtecordings in mind).. Of course, for one job it's not really economical

So maybe look out to rent a system or use a service where they have it. Good luck

Gerax · 8th June 2007

Yes, I was thinking about Cedar. I belive I'll try to minimize the noise as much as I can without damaging the sound, and I'll leave the rest to my mastering engineer which uses a Sadie workstation with the Cedar DeNoise suite of plug ins. He also has the TC Backdrop Noise reduction in his System 6000 which seems to be another powerful tool, but I'd ideally want to go to the mastering with most of the noise taken out. That's why I was asking if you post guys have any favourite tricks in your bag that could help without messing with the quality of the audio.

L.G.

renec · 8th June 2007

i'd talk to your mastering engineer before doing multiple stage of noise reduction betwixt the two of you. You may actually be hurting his ability to deal with the noise by changing it on the front end.

Henchman · 8th June 2007

Send the files to CEDAR.
They'll denoise it for, what I'm told, a reasonable fee.

introvert · 8th June 2007

Cedar will denoise files for you? Holy $*#&. News to me.

Jackie Treehorn · 9th June 2007

I would also be quite interested to find someone who is available to denoise a file using Cedar.

Do you have contact info for the company, Henchman?

Thanks in advance.

Henchman · 9th June 2007

Quote:

Originally Posted by Jackie Treehorn

I would also be quite interested to find someone who is available to denoise a file using Cedar.

Do you have contact info for the company, Henchman?

Thanks in advance.

Well, there is htis magic tool called Google.

But here you go anyway.
Thi is a link to their service bureau page:

Cambridge Sound Restoration

There's a link with their prices as well:

http://www.cedaraudio.com/bureau/ren...ces_prices.pdf

NDOutPost · 9th June 2007

Try the wavearts de buzz, seems OK on stuff like this. Let us know...

philper · 9th June 2007

I got this email from Cedar UK a few days ago about a buzz/whine issue on a doc I worked on.

Philip Perkins

Hello Philip,

Thank you for your email.

Yes we do offer a audio restoration service here at CEDAR, and we would be more then happy to process a short 1 min audio sample for you. If you would like to send, via email a short audio sample to me, in Wav or Aiff format.

To give you an idea of cost we charge £100 per studio hour, with a minimum charge of £50 or anything less then one hour.

If you have any further questions please feel free to contact me directly.

Best Regards

Paul

-------------------------
Paul Alexander
CEDAR Audio Ltd
20 Home End
Fulbourn
Cambridge
CB21 5BS
UK

Tel: +44 1223 881771
Fax: +44 1223 881778
Web: CEDAR Audio Ltd: Audio Restoration Systems

8th June 2007	#1
Gerax Lives for gear Join Date: Dec 2003 Location: Modena, Italy Posts: 619 Thread Starter	Again, on noise reduction Hi all I'm working on the mix for a DVD of a live gig with a string quartet. I have some troubles with a static noise (bzzzzzzz) generated by the power supply of a spotlight (which is turned on and off when the players get on the stage). It's kind of high pitched and it seems a bit modulated. It's only heard during to softest passages, like in intros or coda (when only one of the musicians is playng, very soft) but since there's some speaking in between music to introduce the songs, I'd need to get rid of it. I really want to be as transparent to the music (all acoustic quasi classical) as I can be. So far I tried with the standrd stuff, Digi DINR, Waves X-Noise and X-Hum, notch filters, but I feel that, even though I can get rid of much of the noise, I'm changing the sound a bit too much, particulary the "air" surrounding the musicians, which to me is key. Any other suggestions or tricks I may try? Thanx L.G. __________________ Lorenzo Gerace L'Acquario Recording & Post Mobile Recording, Editing, Mixing Prato (PO) Italy info@acquariorecording.it http://www.acquariorecording.it

8th June 2007	#3
DrDeltaM Moderator Join Date: Sep 2003 Location: Belgium Posts: 4,301	I might sound like a broken record (hey, let's fix that!), but Cedar Cambridge would fit your needs (can track moving buzz, and is designed with high fidelity like classical rtecordings in mind).. Of course, for one job it's not really economical So maybe look out to rent a system or use a service where they have it. Good luck __________________ Mathijs Indesteege aka Mathew Lane mixing - mastering - audio restoration - plugins http://www.mathewlane.com DrMS. Focus on your stereo field. - NEW v3.2 OUT NOW! DrMS spatial processor - native RTAS/AU/VST plugin » Digital Audio Product Support Joystick Audio - Benelux High End Distributor http://www.joystick.be

8th June 2007	#6
Henchman Lives for gear Join Date: Jun 2002 Location: LA, USA Posts: 6,709	Send the files to CEDAR. They'll denoise it for, what I'm told, a reasonable fee. __________________ www.markhensley.tv IMDB Credits

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8th June 2007	#2
imgoinmad Gear maniac Join Date: Feb 2007 Location: Seattle, WA Posts: 210	I had a project with a similar problem. What I ended up doing was sampling the noise at a quiet section (between songs) with X-Noise. I simply reduced it less during the playing and a little more during the talking. I took it to the point before it adversely affected the recording. The sound is still there but was reduced enough that while I still hear it, nobody else seems to notice it. (kind of like when you paint your house and get the house color on the trim...nobody seems to notice it but you see it every time!) The modulation is what makes this type of thing really difficult. I'd love to hear from others who've found good ways to kill this type of thing.

8th June 2007	#5
renec Gear maniac Join Date: Feb 2007 Posts: 219	i'd talk to your mastering engineer before doing multiple stage of noise reduction betwixt the two of you. You may actually be hurting his ability to deal with the noise by changing it on the front end.

8th June 2007	#7
introvert Gear maniac Join Date: Oct 2005 Location: Dallas, Tx Posts: 277	Cedar will denoise files for you? Holy $*#&. News to me.

9th June 2007	#8
Jackie Treehorn Gear maniac Join Date: May 2006 Location: Austin, Texas Posts: 207	I would also be quite interested to find someone who is available to denoise a file using Cedar. Do you have contact info for the company, Henchman? Thanks in advance.

9th June 2007	#10
NDOutPost Gear interested Join Date: Jun 2007 Posts: 5	Try the wavearts de buzz, seems OK on stuff like this. Let us know...

9th June 2007	#11
philper Lives for gear Join Date: Dec 2005 Location: San Francisco area Posts: 2,299	I got this email from Cedar UK a few days ago about a buzz/whine issue on a doc I worked on. Philip Perkins Hello Philip, Thank you for your email. Yes we do offer a audio restoration service here at CEDAR, and we would be more then happy to process a short 1 min audio sample for you. If you would like to send, via email a short audio sample to me, in Wav or Aiff format. To give you an idea of cost we charge £100 per studio hour, with a minimum charge of £50 or anything less then one hour. If you have any further questions please feel free to contact me directly. Best Regards Paul ------------------------- Paul Alexander CEDAR Audio Ltd 20 Home End Fulbourn Cambridge CB21 5BS UK Tel: +44 1223 881771 Fax: +44 1223 881778 Web: CEDAR Audio Ltd: Audio Restoration Systems