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tslr

Q: Sample rate conversion surprise in waveburner

I've been using Waveburner since it was an OS 9 application but this was new to me.

I was mastering a CD for a friend of mine when I noticed that 5 of the eleven tracks I had been given were 48k files after I had already given out a first run off the master just for them to listen to.

I was finishing up mastering it for real when I looked at the inspector and I noticed for the first time that the first track was at 48 along with four others. 5 tracks at 48 six tracks at 44.1

My first reaction is that I'm need to call and get some 44,1 files or convert them myself in Logic. But I start thinking, why did it work the first time I made a CD? So I bounced the project as is and made what should be close to the final just to see what would happen.

It worked. I have an EQ on each track with a Limiter on the mix that I adjust gain with in the Mix Lane.

I didn't think a 48k audio file would even play in waveburner let alone be sample rate converted during the bounce. I don't hear any bad sounding artifacts at all with the converted tracks.

My paranoid self makes me think I should replace them with 44.1 files before I do the bounce and I may at this point, but I'm not sure i will be able to tell any difference. The final sounds great.

I was looking for update information mentioning sample rate conversion but I can't seem to find any. I guess I missed the memo.

Message was edited by: tslr

Mac Pro, Mac OS X (10.6.5)

Posted on Dec 1, 2010 7:37 PM

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Q: Sample rate conversion surprise in waveburner

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  • by Alcomposer,

    Alcomposer Alcomposer Dec 3, 2010 10:45 PM in response to tslr
    Level 1 (5 points)
    Dec 3, 2010 10:45 PM in response to tslr
    Hi tslr...


    I am thinking that ever since Apple came out with Core Audio architecture they basically put it in every audio app that they had, that said- Apple's buyout of Emagic was most probably where they were able to get allot of the Core Audio architecture from, (there is a memo somewhere about this- quite public knowledge)...

    Basically after OS9 and the buyout it was really cool to see parts of logic running around the OS, (Midi preferences etc.)

    Then Garageband...

    I think what I am trying to say is that this is most probably some functionality that is occuring due to Core Audio Services- not Waveburner- so most probably there is a release note somewhere discussing Sampling Rate Agnostic's. (Actually come to think about it I think it was a new feature of Logic Pro...

    Regards

    Alex

    PS: I wouldn't think that it would matter about being in 48 or 44.1- so don't loose sleep over it.
  • by Pancenter,

    Pancenter Pancenter Dec 4, 2010 12:15 AM in response to tslr
    Level 6 (9,958 points)
    Audio
    Dec 4, 2010 12:15 AM in response to tslr
    I think most mastering programs do this now.

    I use Sony's SoundForge/CD-Architect on the PC for these tasks and it pretty much converts everything you throw at it into 16-bit 44.1. I always master using 24-bit files and let the mastering program make the final conversion and add dithering.

    pancenter-