48 and 41K

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Aldersyde
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48 and 41K

Post by Aldersyde » Fri Jul 18, 2014 4:53 pm

I'm working on the project where the client wants the mix and stems in 48k. I recorded in 44.1 and then did a "save as" and converted to 48K in Wavelab.

Even though my sound card is set at 44.1, the 48K files play back no differently thatn the 44.1 version in Waveleb.

Does Wavelab automatically adjust itself to the file format in spite of the sound card settings or am I doing something wrong?

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Arjan P
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Re: 48 and 41K

Post by Arjan P » Fri Jul 18, 2014 7:51 pm

No, WL is known to not do any such things. You say you did a 'save as', but that won't work to change the sample rate. You need to render the file with a resampler in the effect chain - Chrystal Resampler for instance.
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Andreas92
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Re: 48 and 41K

Post by Andreas92 » Mon Jun 24, 2019 2:30 pm

This makes sence. Thanks for info :-)
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bob99
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Re: 48 and 41K

Post by bob99 » Sat Aug 03, 2019 6:48 am

Andreas92 wrote:
Mon Jun 24, 2019 2:30 pm
This makes sence.
I agree it makes sense to do it that way, and this is a very old thread, but technically doing a "save as" with a different sample rate at the output file format DOES do a sampling rate conversion in Wavelab. And it is sort of 'behind the scenes' so you don't necessarily know, but In Wavelab 9 it uses the internal sox src with a setting of "best" to do the src, and In Wavelab 7 it used the internal Crystal Resampler with a setting of "high" (not "ultra") to do the "save as" src. It's not specifically telling you it's doing a sample rate conversion, but it is.

But I totally agree with Arjan that it's not a good idea to do a sampling rate conversion that way (as "save as"), for one thing because you might not have enough headroom in the audio to do an src without clipping, and there are other reasons. It's much better to do it in a render with the src plugin with the options that the render allows.

The OP's experience of not telling a difference even though the interface was set for 44.1, I find that it's normal for the interface to switch sample rate if set for internal clock, and playing a file of a different rate from Wavelab. I believe that's what the OP was experiencing, even though the interface probably said 44.1 before they started playing the 48k file, it most likely said 48k after starting to play the "saved as" 48k file.

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Arjan P
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Re: 48 and 41K

Post by Arjan P » Sat Aug 17, 2019 9:24 pm

Well, it's too long ago to recall, but my answer was then probably based on even earlier versions of WL, where you could save as 44.1 without SRC happening by WL 'behind your back'. You'd end up with the same file pitch changed and with longer duration..
--- "If anyone owes it all to Bach, it's God" - Emil Cioran ---
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