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Subject:thick line in 24 bit files
Posted by: made62
Date:3/12/2010 10:01:16 PM
whenever i save a file in 24bit format a thicker line appears in the Left and Right channels making it difficult to edit properly. is this a rendering issue? 16 bit files don't show the line and appear normal. any ideas? thanks in advance. cheers |
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Subject:RE: thick line in 24 bit files
Reply by: jackn2mpu
Date:3/13/2010 4:57:33 AM
Need more info. Where is the line? Is it a horizontal or vertical line? Is the waveform line thicker or what? Also please post your system specs in your user profile - it would help a lot for not just this question but others you may (and will) have. Jack |
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Subject:RE: thick line in 24 bit files
Reply by: made62
Date:3/13/2010 9:11:44 AM
hi jack, the line is horizontal on both Left and Right channel. the waveform centre line is thicker. when i zoom in it shows dots. the noise floor does not seem to be affected. when i bring up the files in vegas, they display properly. the usual thin line thru the waveform. been using sound forge for years and have never encountered this before. thanks much. cheers marc |
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Subject:RE: thick line in 24 bit files
Reply by: jackn2mpu
Date:3/14/2010 5:57:06 AM
You still need to put your system specs in your profile - it would help a lot. You know - computer type, OS, etc. Also which version of Soundforge are you using? Without this nobody can really give a good definitive answer - we're just taking stabs in the dark. That being said, while I have never worked in 24 bit, I have worked in 32 bit and not seen this problem. I use Sonar 8.3.1 as my daw and do my final editing and tweaking inside Soundforge 9e. I have Sonar set to render 32 bit files and everything's okay. Jack |
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Subject:RE: thick line in 24 bit files
Reply by: made62
Date:3/14/2010 1:54:16 PM
hi jack, i've submitted my system specs. here they are anyway. PC AudioLabs Laptop Windows 7 Professional Duo Core P8700 @2.53 ghz ATI Radeon HD 4650. I use Sound Forge 10. This wasn't an issue with other versions of SF. it seems to be a wave drawing issue. don't know. thanks much. marc |
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Subject:RE: thick line in 24 bit files
Reply by: jackn2mpu
Date:3/14/2010 4:03:14 PM
Don't have SF10 - can't help there. These 24 bit files - are they audio brought in to the computer? If so, I wonder if it's an indication of something like DC offset or something weird like that? You know, some kind of indicator that's new in SF10. Jack |
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Subject:RE: thick line in 24 bit files
Reply by: made62
Date:3/14/2010 4:14:56 PM
hi jack, this files are rendered in SF10 and not brought in. i installed SF8 to see if the 24bit files show up the same with the line....nope...they are normal. weird indeed. cheers marc |
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Subject:RE: thick line in 24 bit files
Reply by: jackn2mpu
Date:3/15/2010 5:47:54 AM
When you say 'rendered in' do you mean 'recorded in' SF? Okay - just did an experiment in SF9 (I used to have 6, 7, 7 8 but wiped them off the machine). I recorded some audio from the output of my Moog Voyage rack mount synth into SF9. Tried it at 8 bit, 16 bit & 24 bit. I did see a thicker center line on both the left and right channel waveforms (the Moog has stereo 2 channel outs) in 24 bit and a thinner one in 16. The one in 8 bit may have been thinner yet but couldn't see that on my computer screen. I then opened up an audio file generated by Sonar 8 (my daw program) which I have set to render in 32 bit (there's no audio interface on earth that works at 32 bit). There was a thicker center line there like in the 24 bit mentioned above. But nothing that could cause a problem in editing. And I've done a ton of editing of Sonar files with no problems. Is this waveform center line the line you are talking about? Jack |
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Subject:RE: thick line in 24 bit files
Reply by: jackn2mpu
Date:3/15/2010 10:35:08 AM
Update: After I did the above test I shut down my daw computer for a while. When I restarted it after lunch I had some work in SF to do. Lo and behold there was a thick black line at the bottom of a waveform window I had open inside SF9e. Closed that file and opened a couple of others and the same line appeared. When I did the tests in my previous post today I just switched bit depths inside of SF and didn't reboot the daw or re-power my sound interface. And I apparently must have left SF in 8 bit mode. What I ended up doing is to open a new, blank file to record into and selected 16 bit mode. I then closed SF and shut down the computer. I also power cycled my sound interface. I then restarted everything up, opened SF, opened a few files and the waveform display was back to the way it should be (no thick black line across the bottom of the waveform display where the scroll bar is/was. Just doesn't make any sense. I didn't think one would have to reboot when changing bit depths. I know sometimes, depending on the propgram you have to reboot when changing sample rates. Jack |
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Subject:RE: thick line in 24 bit files
Reply by: made62
Date:3/15/2010 10:38:17 AM
thanks much jack. that's exactly it. this phenomenon occurs when i record and import 24bit files into SF10. editing fade outs is a little problematic cause i can't see what's really going on unless i zoom in and of course check the meters. i'm concerned about artifacts in the rendering and saving of files. hope this is not the case. cheers marc |
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Subject:RE: thick line in 24 bit files
Reply by: Geoff_Wood
Date:3/15/2010 1:06:29 PM
If you change from 16 bits to 24, the line may scale to display the increased noise floor. Maybe ? geoff |
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Subject:RE: thick line in 24 bit files
Reply by: jackn2mpu
Date:3/16/2010 5:26:18 AM
Geoff said: If you change from 16 bits to 24, the line may scale to display the increased noise floor. Maybe ? My reply: I don't think so. The thick line I saw was where the horizontal scroll bar should have been in the waveform window at the bottom. If it was noise floor it would show in both channels for a stereo file and it doesn't. The op said it didn't happen in earlier (pre SF10) versions. I have it happening in SF9; I have earlier versions of SF but wiped them off the daw machine. Jack |