Gearslutz.com - View Single Post - Possible accidental upsampling! Need help!

snokdogg · 27th November 2009

This is going to get pretty stupid, so let me just dive into the embarrassment...

I am mixing the sound for a documentary for TV, and received an OMF with the audio and a separate video file for reference. After converting the audio file to a format that Cubase could handle, I did most of the audio editing/mixing and everything seemed fine.

Then, I suddenly realized that the project sample rate is 48khz, as opposed to 44.1 that I normaly use. What I don't know is if this was set before the OMF was imported, or if Cubase automatically sets the project SR to whatever the imported files are. The latter seems unlikely (or?), so I am sort of assuming that Cubase has upsampled all the files from 44.1 to 48khz. Could be they were 48khz in the first place, I've sent an e-mail to inquire, which means there is no problem to begin with. Sort of doubt that too though...

There is some distortion here and there and a sort of a drop out in one of the music files (an mp3! jeez!). Most of this seems to be a microphone and/or WL system overloading, but I am worrying that these are actually artifacts from sample rate conversion... although they do appear identically in the stereo rough mix from the video file.

Any thoughts on how to discern this? I am not even sure if I really have a problem

I do have the time to export whatever settings I can and start again in 44.1khz, but would of course prefer not to.

All answers, hints, tips and smacks greatly appreciated.

PS! As you can tell, I don't really do post-production.
PS2! This is going on national television in Norway. God, or somebody, help me!

27th November 2009	#1
snokdogg Gear interested Join Date: Nov 2009 Location: Norway Posts: 14 Thread Starter	Possible accidental upsampling! Need help! This is going to get pretty stupid, so let me just dive into the embarrassment... I am mixing the sound for a documentary for TV, and received an OMF with the audio and a separate video file for reference. After converting the audio file to a format that Cubase could handle, I did most of the audio editing/mixing and everything seemed fine. Then, I suddenly realized that the project sample rate is 48khz, as opposed to 44.1 that I normaly use. What I don't know is if this was set before the OMF was imported, or if Cubase automatically sets the project SR to whatever the imported files are. The latter seems unlikely (or?), so I am sort of assuming that Cubase has upsampled all the files from 44.1 to 48khz. Could be they were 48khz in the first place, I've sent an e-mail to inquire, which means there is no problem to begin with. Sort of doubt that too though... There is some distortion here and there and a sort of a drop out in one of the music files (an mp3! jeez!). Most of this seems to be a microphone and/or WL system overloading, but I am worrying that these are actually artifacts from sample rate conversion... although they do appear identically in the stereo rough mix from the video file. Any thoughts on how to discern this? I am not even sure if I really have a problem I do have the time to export whatever settings I can and start again in 44.1khz, but would of course prefer not to. All answers, hints, tips and smacks greatly appreciated. PS! As you can tell, I don't really do post-production. PS2! This is going on national television in Norway. God, or somebody, help me!