I was hooking up my "new" Octopre Mkii to my 18i20at 48khz(also recently added), and noticed that older projects with 44.1khz sample rates, wouldn't lock. I'd like to start doing all my tracking(further overdubs/next tracks) at 48khz. What is the easiest way to do this?
      I assume that I can't have projects with both rates. Is that true? I was under the impression it was possible, but perhaps not with the 18i20/Octopre.
      Do I have to convert each track or can I convert projects?
Thanks for all help and advice!
Michael

1. Turn off internet, and any wi fi...(free up irq's)
Make sure you have onboard audio on...but not HD HDMI audio.
 
Setup/Control pannel/Speaker..Default play back device being the Onboard sound card,(share the device with mutilple software if you want to) and select the ins and outs of that device for playback...Play the 44.1 16bit file (Project?..stereo file?..))  through a  Media player, or software, other then Sonar///...Once you got 44.1 16 bit files playing through that onboard sound card, and coming out of the output jack.....Set up sonar to use the other audio device's ASIO? ((Tascam US1641 inputs)), and not share with any other software the ASIO....In Sonar's preference.
 
Then Run the software playing 44.1 file's output of the onboard sound cards play back, into the Audio card of added on ASIO input((Tascam US1641))....and re-record the file at your bit depth of choice/tempo and time signature does not need to change to do this, and....Should do the trick.
 
Do you have a second pc?...Play the file on one PC or Mac...take the output, run it into another PC's input, and record at the new bit rate....use the same tempo and time signaturess.....Should work...could even add eq through a mixer to beef it up...or feed a multi External FXs unit from one audio device...take the output of that fx, and run it into the other audio device, and start recording... to re record...at ...etc
 
Or open a software that renders into multiple formats and rerender to the new bit rate....
 
Going from a lower bit rate to a higher might give you artifacts on the wav file....So I recommend re recording...and perhaps adding some eq if  necessary... 
 
Some say to capture the best sound, others say capture the best performance....I say "" get it done.."" and it is done!
 
Best wishes!

Hi, Michael. The following post is going to be vague and probably useless BUT I've been gleaning some strange stuff that I do not really understand where Sonar can somehow work at a fixed samplerate (or maybe it's bit depth... seriously IDK WTF I'm talking about) using files of varying sr/bd. Like you set the project to use 48/24 and anything in it/imported into it just works at those settings even if they are not.
 
I'm not talking about import conversion. I'm talking about Sonar somehow doing some automagic weirdness where a 48/24 project just references audio files that do not match those settings and plays them back at the appropriate setting.
 
This could be utter bullpuckey and I am likely confused about what I was reading but I think it was a concept I encountered when poking around strange and scary areas of the manual.
 
Otherwise IRC I've gotten prompts when opening projects at a different setting where it was asking if I wanted to convert the files. No idea how or why or if maybe I dreamed that (I'm a little crazy so the latter is quite possible) but I'm just trying to give you some things to explore in the manual.
 
I yanked the Platinum PDF local help file from my DAW and tossed it on my laptop and occasionally poke around to dig up weird crap like this (like I just scroll through the topics/contents and if something slaps me in the face I check it out). Maybe it's in there near the end where all the really crazy stuff is.
 
Of course the other guys will know better and hopefully will pop in soon.
 
Cheers.

Brundlefly made a nice post a week or two ago on the conversioning. I will not be able to find it on my phone for you though :(

First question: Why do you want to start working at 48 kHz?

There are so many programs and tools which can batch-convert WAV from 44 kHz to 48 kHz.
Batch-convert ALL files from 44 to 48 kHz OUTSIDE of Sonar.
When you start any Project it is fully converted.
This takes only ten minutes of time to convert ALL wav-files from all your projects.
 
For example:
http://www.fmjsoft.com/awaveaudio.html
http://www.avs4you.com
 

Yah but routing things with the toys He/She has listed,..will help more so get a better re recording/ and learn how to solve many other Busing problems in future, that will no doubt arise on day.......So,..Choices eh?....inside the box, out side the box, or many boxes, and many wills, many ways...all linked to bliss...we hope.
 
Cheers.

Thanks to all! Whoohoo.
@ Craig     I guess I'm thinking it's "better". I stayed with 44.1 when 48 became an option, because of limited HDD space (10+ years ago), and that isn't the case, now.  If my wife continues making videos, I'd like to do the soundtracks. I've read that 48 kHz is the "norm" in that world. I wouldn't be using all my projects, though, only some. So perhaps I could convert them as needed?
@ Sir Les    I do have 2 of each (PC+I/O), but that seems a PITA with 20-30 tracks per project. It is an option, tho.
@ Beep    That is the same "reading" that is floating around in my thought pool! "Didn't I read that....?"
@ Mettelus. Thanks, I'll look for his post.
@THambrecht    Thanks for those links. I wondered about that possibility.
Michael

Yes it is a option...I do often use odd ones at times, when the others do not work to my liking...wink...PITA BREAD WINE AND FISH...is All Good eating info Here...
 
Be well.
 
Cheers!

You, know man... unless there is some drastic reason to do so I would complete all projects you have at their current settings (so new tracks get done at the same setting) and then any new projects get started at the higher samplerate.
 
That's how I've always rolled. Start something at a specific SR/BD... work in that until completion.
 
Although I would not personally start a project at 44.1 (I mostly do 48 or 96) I have been doing work for a fellow who uses 44.1 and it's totally fine.
 
I just change settings as need be based on whatever I'm working on.
 
In fact I think upsampling (going from 44.1 to something higher) might even open the door for more issues than they'll solve but I don't know for sure. I just know that I've read that unless you really have to "upsample" you should probably avoid it.
 
However if you DO find that thingamabob where Sonar can use whatever SR/file type then record any new stuff at the higher settings... well that might work out. I'd personally be worried abotu a performance hit when doing that type of of automagic conversion but it probably does it once upon opening then it's done until the next time you load the project.
 
Again... vague... IDK what I'm talking about... I should probably be completely ignored... the other dudes could likely point you in a much better direction.
 
 
Good luck.