Noise Reduction Question -SpectraLayers Pro - MAGIX Community Forums Archive

Subject:Noise Reduction Question Posted by: Doug_Marshall Date:6/22/2013 10:32:58 PM I've been working on an audio track for an organ music video (Mozart) which is currently unlisted on YouTube at: http://www.youtube.com/watch?v=0oYN8VL6QqA&feature=youtu.be During the recording session a machine noise (hum, about 230 Hz) would come and go periodically. A perfect example of the problem occurs at 7:10 in the video. I'm looking for the right technique - and the right software - to go after this noise and, secondarily, the ambient rumble in the sound. I was working with the noise reduction in Sound Forge and felt that, no matter how I tweaked it, it stripped out too much of the music and not enough of the hum. SpectraLayers seems like the right sort of tool, but the NR function isn't exactly intuitive. Any suggestions? Should I be looking at Izotope RX? Thanks, Doug M.
Subject:RE: Noise Reduction Question Reply by: ChipGallo Date:6/23/2013 9:34:39 AM Gary Rebholtz did a couple of free tutorials / demos, one of which shows how to literally paint out a bothersome frequency or sound. You could watch these to get an idea. There does seem to be a learning curve on this product so expect to spend some time getting a feel for the tools. http://www.sonycreativesoftware.com/spectralayerspro and scroll down to the "Resources" area at the bottom of the page. Message last edited on6/23/2013 9:37:01 AM byChipGallo.
Subject:RE: Noise Reduction Question Reply by: Doug_Marshall Date:6/23/2013 8:25:10 PM Thanks a lot! I watched the Jan 31 webinar and got the info I needed. Of course, there's so much in it that now I'm confused, so I'll be watching parts of it again. SpectraLayers isn't the most intuitive interface, it's capabilities notwithstanding. 6/25/13 Update: I was able to isolate and excise the hum that was bugging me. It was a 119 Hz machine noise that came and went several times. I had to go all the way to the max of 65536 on the resolution in order to isolate it, but there it was, all right! Of course, the response at that resolution was incredibly slow and every mouse movement took an eternity, but it's done! Message last edited on6/24/2013 11:27:40 PM byDoug_Marshall.
Subject:RE: Noise Reduction Question Reply by: Steve B Date:7/6/2013 4:24:49 PM Mechanical systems in the US often vibrate at 120 Hz (twice the AC line frequency) but other harmonics are possible. I admire your patience to remove this with a 65K bucket size. SpectraLayers is terrific at showing you what the noise problem is, but I'd like some kind of command interface where you specify the frequencies you'd like removed. I've got hour long recordings that have 120Hz fan noise and even some 60Hz pickup. Set it up, walk away, come back later to find a cleaned file.
Subject:RE: Noise Reduction Question Reply by: Doug_Marshall Date:7/6/2013 8:10:08 PM That option would be very helpful, indeed! I have to watch it carefully though with the organ music I record in order to avoid disrupting bass notes. That concern might be alleviated if a threshold could also be set in addition to frequency.

Subject:Noise Reduction Question

Date:6/22/2013 10:32:58 PM

I've been working on an audio track for an organ music video (Mozart) which is currently unlisted on YouTube at:
http://www.youtube.com/watch?v=0oYN8VL6QqA&feature=youtu.be

During the recording session a machine noise (hum, about 230 Hz) would come and go periodically. A perfect example of the problem occurs at 7:10 in the video.

I'm looking for the right technique - and the right software - to go after this noise and, secondarily, the ambient rumble in the sound. I was working with the noise reduction in Sound Forge and felt that, no matter how I tweaked it, it stripped out too much of the music and not enough of the hum. SpectraLayers seems like the right sort of tool, but the NR function isn't exactly intuitive.

Any suggestions? Should I be looking at Izotope RX?
Thanks,
Doug M.

Subject:RE: Noise Reduction Question

Reply by: ChipGallo

Date:6/23/2013 9:34:39 AM

Gary Rebholtz did a couple of free tutorials / demos, one of which shows how to literally paint out a bothersome frequency or sound. You could watch these to get an idea. There does seem to be a learning curve on this product so expect to spend some time getting a feel for the tools.

http://www.sonycreativesoftware.com/spectralayerspro and scroll down to the "Resources" area at the bottom of the page.

Message last edited on6/23/2013 9:37:01 AM byChipGallo.

Subject:RE: Noise Reduction Question

Reply by: Doug_Marshall

Date:6/23/2013 8:25:10 PM

Thanks a lot! I watched the Jan 31 webinar and got the info I needed. Of course, there's so much in it that now I'm confused, so I'll be watching parts of it again. SpectraLayers isn't the most intuitive interface, it's capabilities notwithstanding.

6/25/13 Update: I was able to isolate and excise the hum that was bugging me. It was a 119 Hz machine noise that came and went several times. I had to go all the way to the max of 65536 on the resolution in order to isolate it, but there it was, all right! Of course, the response at that resolution was incredibly slow and every mouse movement took an eternity, but it's done!

Message last edited on6/24/2013 11:27:40 PM byDoug_Marshall.

Subject:RE: Noise Reduction Question

Reply by: Steve B

Date:7/6/2013 4:24:49 PM

Mechanical systems in the US often vibrate at 120 Hz (twice the AC line frequency) but other harmonics are possible.

I admire your patience to remove this with a 65K bucket size. SpectraLayers is terrific at showing you what the noise problem is, but I'd like some kind of command interface where you specify the frequencies you'd like removed. I've got hour long recordings that have 120Hz fan noise and even some 60Hz pickup. Set it up, walk away, come back later to find a cleaned file.

Subject:RE: Noise Reduction Question

Reply by: Doug_Marshall

Date:7/6/2013 8:10:08 PM

That option would be very helpful, indeed! I have to watch it carefully though with the organ music I record in order to avoid disrupting bass notes. That concern might be alleviated if a threshold could also be set in addition to frequency.