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MP3 problems, also mac vs PC compatibility issues

 
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Tom Test
DC


Joined: 23 Jan 2007
Posts: 629
Location: Chicago, IL

PostPosted: Thu Mar 05, 2009 1:50 pm    Post subject: MP3 problems, also mac vs PC compatibility issues Reply with quote

Hey there,

Have you been following the mock audition I've been staging in the Chat forum? Well I finally pieced all 34 submissions together and posted a link to download the master file. But I am crestfallen at the horrible audio quality I now have, and I don't know why it happened.

Question: when I open an MP3, add a bunch of other MP3s, the save and close that file - THEN repeat the process a few times - am I making a compresssion of a compression of a compression every time I add new files and save it again? That's the only explanation I can think of.

If you want, PM me and I'll send you a short snippet of the file in question to your e-mail address. It sounds very artifact-y and echo-y. Craptacular.

Also, I had some strange issues with a few files from people who recorded on Macs. For some of them, when I tried opening their MP3 and adding it to the master file of all auditions, I'd get an error message telling me that the files from Mac users had a different sample rate that the file I was trying to add it to. But...I'm not so sure they really DID have a different sample rate (I requested 44.1 MP3 @ 128kbps). My Sound Forge 9.0 told me I could resample the Mac-user file, but it didn't work - or maybe I just can't figure out how to do it).

I figured out a work-around. I opened the mac-user MP3 file, saved it as a wav file (when I tried, the dialog box said it was a 48 Hz file by the way), saving it to 44.1, THEN convert it to MP3 @ 128. No resampling was done directly by me. I expect the issue is some Mac-vs-PC problem, and I hope someone can help me figure it out so I can avoid jumping through hoops.

Thanks for your help! I've put a lot of time into this mock audition, and don't want to disappoint a lot of people.
_________________
Best regards,
Tom Test
"The Voice You Trust"
www.tomtest.com
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