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  • Is there a simple way to convert lots of older projects from 44.1 to 48khz? (p.2)
2015/07/27 15:09:21
Sir Les
Hay Beep...You are on my wav frequency....I do not like upsampling...it causes issues in the files for me...that is why I re record...and add some eq beef to that when doing....Makes much better converts!
 
Bliss in cheers!...Stay cool...I hear you!
2015/07/27 15:11:36
John
I would listen to Beep on this. 
2015/07/27 15:19:06
Beagle
I agree with Beep - there's not many good reasons to change your sampling rate from 44.1 to 48kHz on existing or old projects.  no benefit will come from upsampling them.
 
if you want to start new projects at 48k you can reap some benefit from that, but there's almost nothing I can think of which would make me want to change existing or finished projects to 48k.
2015/07/27 15:19:24
Beepster
Hi, Les. Yeah... my dum dum understanding of frequency/samplerate stuff is 99% of the time the difference between 44.1 and 48 isn't gonna make any real difference... especially if most of the files were already recorded at 44.1. Upsampling? Well I don't know what can happen there but if I have something sounding good I try not to bounce/export/do anything to it unless necessary. I don't believe there is any benefit at all to increasing the sample.
 
But really I am indeed a dum dum and I work with an overabundance of caution simply out of fear because I don't want to screw something up.
2015/07/27 15:20:44
Beepster
lol... I guess I may have gotten one right.
 
Fear. It works!
 
;-)
 
2015/07/27 16:03:07
pentimentosound
Well, well, well! I didn't think about upsampling causing issues! I'll go with door #1, as Beep pointed out. It's fine as it is and I can do new stuff higher. No one mentioned whether downward conversion causes artifacts.... yes, no?
 
..and going back to video; I guess resampling my master mixes to 48khz wouldn't be a big deal, if I need to do that for a video.
Thanks to all.
Michael
2015/07/27 16:11:09
Beepster
Well we do downsampling any time we export from higher samplerates down to CD quality (44.1) so that's of course totally fine.
 
From what I've gleaned you mostly want the higher samplerates for recording and processing to snag all the high freq info. That way when you mix/add effects and stuff you are working with more information. Once it's all sweetened up dropping it down keeps the good stuff and removes unnecessary stuff.
 
Or something like that. It's still all voodoo weirdness to me and as I stated before... I'm a dum dum. Lots of info online about this type of thing though if you are really interested. It'a ll sciency and crap though. Playing guitar is more fun.
2015/07/27 16:58:22
pentimentosound
Playing guitar is definitely more fun!
 
Do you hear a big difference at 96khz?
Michael
2015/07/27 17:08:47
slartabartfast
Beepster
Hi, Les. Yeah... my dum dum understanding of frequency/samplerate stuff is 99% of the time the difference between 44.1 and 48 isn't gonna make any real difference... especially if most of the files were already recorded at 44.1. Upsampling? Well I don't know what can happen there but if I have something sounding good I try not to bounce/export/do anything to it unless necessary. I don't believe there is any benefit at all to increasing the sample.
 
But really I am indeed a dum dum and I work with an overabundance of caution simply out of fear because I don't want to screw something up.


Well the issue with converting 44.1 to 48 has nothing to do with the accuracy of higher rates for representing higher frequencies. Please do not let us go there. It is simply that a 44.1 K file only has 44.1 K information encoded in it. The math is that there is only that amount of information available, you cannot create more information by changing the way it is encoded.  The analogy is that if you pour a 12 oz can of beer into a 1 pint tankard, you do not get any more beer. You will not necessarily lose any information, but it is possible that the information will be minimally altered by the upsampling process because the two rates are not convertible by an integer relationship. If you were to convert 48K to 96K you could just pad zeros and have a  file with identical information, but you are going to have to do some rounding/interpolation  with non-integer re-sampling, and that presents the opportunity for a trivial difference.
2015/07/27 17:14:56
Beepster
Well I think I can for certain things but I also think my hairline is exactly where it was when I was 18 and that chicks really dig scrawny, twisted up weirdo cripples.
 
So yeah... could be totally in my head. lol
 
Seriously though I've dropped to 48 and if I've lost anything it's minimal and I mix around it anyway. As I am learning more I may bump it up again for stuff I intend to fully release (for use in movies or whatever) but just for demos or fun stuff 48 is more than fine and what was used (AFAIK) in the ADAT days which was what the industry used for quite some time. No real reason to take the performance hit unless you have a specific need.
 
Bumping up from 44.1 for new projects would likely be a good idea though.
 
Cheers.
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