Unless you are actually up-sampling by means of another route, like adding lots of harmonics and grain, 24-bit reverbs there is actually not much point apart from adding some extra 0's to your files. If you are and also using new 24-bit content then it does no harm as the extra headroom will benefit your mix in the end.
 

CJaysMusic
Its useless and a waste of disk space and a waste of CPU to convert projects that where originally recorded at 44/16 to anything higher as far as sample rates go.
What do you expect to happen when you upsample them? It wont sound any better and youll just eat disk space

I don't think the guy was asking your opinion if it was the right thing to do or not but he was asking how to do it?
There are many reasons to be changing things such as this. #1 you could have bought a new piece of gear & it doesn't work with the old sample rate. I've been recording for the last 10 years @ 44.1 16 bit but my new Presonus StudioLive 32 will only work @ 48KHz @ 24bit so now I have 40,935 wav files that are currently in need of being modified from 44.1khz @16bit to 48 @24bit
 
To my knowledge the best solution is  r8brain which will perform in a batch saving the operator hundreds of hours if you have a large project such as mine. After trying it on 500 or so files it was flawless & easy to use.
 
I'm putting roughly 1000 files into a folder every night for the conversion & should have it all completed in a month or so.
 

CBJ

CJaysMusic
Its useless and a waste of disk space and a waste of CPU to convert projects that where originally recorded at 44/16 to anything higher as far as sample rates go.
What do you expect to happen when you upsample them? It wont sound any better and youll just eat disk space

I don't think the guy was asking your opinion if it was the right thing to do or not but he was asking how to do it?
There are many reasons to be changing things such as this. #1 you could have bought a new piece of gear & it doesn't work with the old sample rate. I've been recording for the last 10 years @ 44.1 16 bit but my new Presonus StudioLive 32 will only work @ 48KHz @ 24bit so now I have 40,935 wav files that are currently in need of being modified from 44.1khz @16bit to 48 @24bit
 
To my knowledge the best solution is  r8brain which will perform in a batch saving the operator hundreds of hours if you have a large project such as mine. After trying it on 500 or so files it was flawless & easy to use.
 
I'm putting roughly 1000 files into a folder every night for the conversion & should have it all completed in a month or so.
 

Yeah well done for quoting a post from 9 years ago.
 
I think he's probably moved on by now......

I've upsampled a project recorded at 48 to 96 for a client who wanted higher sample rates....'what the client wants, the client gets!'
 
My advice. You say that the majority of your project is MIDI based? Try - delete / unfreeze / export all wav files that you don't need until your project is essentially MIDI parts only. Save that project as a copy at a higher sample rate then start from scratch wit the wav files (or reimport them at a higher rate).
If you have problems saving as copy with MIDI files in the project, you'll have to export all MIDI files too.
You can always try saving the project with existing plugins, VSTs etc as a template, so you don't have to go through all this again.
I've got some templates setup with all my go-to instruments etc...just to save time.
 
My old copy of Cool Edit Pro has batch convert which works a dream for mass converting old wav files [who needs new software, right? ;) ], after converting, you can reintroduce them into the project.

So, what exactly is the "Change Audio Format" under Utilities? Would that apply in any of these scenarios? Or what exactly is it for? I've never used it..

I know this is an old thread, but can't resist a few comments.
 
If something was recorded at 44.1 kHz, the quality will not improve if resampled to a higher sample rate. It will improve only if what was recorded is being generated "in the box" and can be rendered at a higher sample rate. However rendering at 48 kHz is not enough to prevent foldover distortion. You'd need at least 88.1 or 96 kHz.
 
If you need to have finished projects at 48 kHz (e.g., because of being requested by a video house), it makes more sense to mix at 44.1 kHz, and then sample-rate-convert the master.

Anderton
If you need to have finished projects at 48 kHz (e.g., because of being requested by a video house), it makes more sense to mix at 44.1 kHz, and then sample-rate-convert the master.

+1 definitely... I was, however, quite shocked that a $3000 piece of hardware doesn't support 44.1 (I had to Google that to believe it, but says "coming soon"). In that case, I would ONLY convert what I was actively working on. By the time 41,000 wav files are converted, the "coming soon" will have passed. It is easy to create "busy work" with no end for oneself; but if it is not contributing to "finished product," it could very well become "waste of time."