Converting audio, do I need to?

I'm doing a project for my family in which I converted 2 hrs and 20 minutes of super 8 and 8mm home movie film to DV. I then imported the DV into Final Cut. There was no audio but I added a commentary track (recorded in Final cut) and a music track comprised of different sources (mp3s, aiff's etc..)
My issue is that I learned that audio in final cut is supposed to be imported as 48 kHz and all my audio sources (except my commentary I am assuming) are 44.1. Is it true that my audio will have distortion and/or pops and clicks when I export? I cannot readily convert and reimport because I have already done a couple hours of edits to the audio (rookie move?). Is there a workaround or does Final Cut 5.0.4 deal with this on render?
Also, what setting would I use to cram 2 hrs 20 mins. plus 2 audio tracks onto a single layer DVD? Or, do I need to go dual layer?
1.6 gHz g5 Mac OS X (10.4.8)
1.6 gHz g5 Mac OS X (10.4.8)
1.6 gHz g5

I've experienced unpredictable results with anything but 16bit, 48kHz sound files, and have gotten into the habit of converting anything before bringing it into FCP. Of course, you are trying to preserve your valuable existing edits.
You could also use SoundtrackPro to convert your files in place from the FCP timeline.
Control (right) click on the non-48KHz clips, choose "send to SoundTrack Pro Audio Project". The sound file will open up in STP. Go to File>Save As, then choose the "AIFF File" option. Save the file using the 16bit, 48kHz options, and switch back to FCP.
Control-click on the sound file you're working on, and choose "reconnect media". "Locate" the aiff file you just saved from STP, and it should link to the edited sound file in timeline. (You may have to deselect the checkbox that says "matched name only" when reconnecting the media.) You can verify that the new sound file has the correct settings by control clicking on the clip in the timeline and looking at its Item Properties> Format.
You don't necessary have to use STP to do this, you can use iTunes or QT Pro. The key is reconnecting the media and forcing FCP to relink your edited clips to a properly sampled audio file.
As for the DVD settings, what program are you using to compress the files? DVD Studio Pro has a handy meter that lets you know if you have enough disk space for your footage at current settings. I don't have or ever use iDVD, so can't help you there.
Be sure to look at the other Apple forums for loads of info on DVD compression settings.
Good luck, let me if I've confused you or left anything out.
Dual G5 2.0, Dual 23" Cinema Displays, 2.5 GB RAM Mac OS X (10.4.7) FCP 5.1.1, DVDSP 4.0.3, HVR-Z1U, HVR-HC1, HVR-M10U

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Converting Audio Tips Needed

Hi All,
I have some older music audio songs that I would like to update (and future protect etc.) Much of the audio is in older formats such as Sound Designer II or AIFF 44/16 or 48/16, so I'd like to update / convert them. I know that the quality will not change going from 16 to 24 bit and it's just larger file with extra zeros etc. but that's ok. Many of these songs will be redone with new 24 bit synths and new 48/24 audio.
MY plan was to convert: 44/16 (Sound Designer II or AIFF) to 44/16 WAVE
or 48/16 (Sound Designer II or AIFF) to 48/16 WAVE
... so shall I assume that:
- .WAV is the preferred (future protected) format?
- Best to just keep the original sample rate?
Am I correct in assuming that old 48/16 audio that is updated to 48/24 will help the associated plugins sound better? I mean will the plugin work at 48/24 even if the audio is 48/16?
Let's say I have 16 tracks of audio at 48/16.
I can go to the audio bin window and select all 16 tracks then say convert to :
bit = 24
file format = WAVE
but what about:
Stereo Conversion = interleaved to split - this is best if I may export to pro tools later - so I may as well do it now - right?
dither = NONE - right?
BTW: I friend who is an experienced pro tools 'pro' - said he just did this in PT9 HD and suprisingly his old Sound Designer II conversions had random noise that was not on the originals! When he did it again - if there was more noise - that were not in the same place.... THAT SOUND SCARY!
Q: Has anyone ever had this happen with LOGIC 9?
IN ADDITION: when I convert ALL and add to audio bin : IS THERE A WAY to:
*swap ALL the old audio in the arrange window with the NEW converted audio ALL AT ONCE*?
Thanks in advance for your help
DAVE

Dave,
A larger bit depth will not make your content sound "better," but it will enhance the processing of sounds. What you want to focus on is the sample rate. A higher sample rate, like a larger bit depth, will not make you sounds "better" per se'. However, when you apply processing (i.e. effects) to a higher sample rate, you have a greater dynamic range of sound at your disposal which a pair of trained ears can pick up on - especially when it comes time for mastering and resampling down to 44.1 after master processing. Make sure you have your dithering set to "Apogee."
As far as what is the "best" sample rate, 48 seems to be the choice over the default 44.1. However, some argue that 88.2 is the best in that it is perfectly halved (44.1 x 2 = 88.2) and because of this, many believe that when a sound has been downsampled back to 44.1 it has a better sonic quality than converting 48 to 44.1.
There is no way that I know of to swap all the audio in the arrange window with the newly converted items. Your best bet is to start from scratch and set you project preferences to your desired higher sample rate. Then when you import sounds, Logic will auto convert them on the fly. Hope this helps.
Cheers.

How-To: Convert audio files to the desired Cisco format (SoX example)

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This week I spent a few hours on converting PCM encoded wave files to CCITT ulaw encoded wave files. You know, the format we all use for UCCX, IP IVR and the like.
I have been searching the interwebs and came across a few suggestions, amongst others:
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The solution I have used is the open source software SoX (Sound eXchange) which can be found here: http://sox.sourceforge.net/
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The script is attached, in the hope someone else benefits from it. Should work out of the box on Mac and Linux machines. The script will traverse the $dirname directory (not recursively) and convert what it finds to 8bit, 8kHz, mono, CCITT ulaw format.
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HTH
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Edit: url added.

Hi,
welcome to the beautiful world of open source :-) By the way, I have not seen anybody programming in Perl for a long time.
Just one comment: G.711 uLaw is just the half of the story. Remember, UCCX supports either G.711 uLaw or G.729 as well. And since G.729 has license restrictions (costs $10000 per year if I remember that correctly), no free software can incorporate it to its "convert to" list (apart from reading it, which is fine).
A piece of advice: CUCM has got that voice translator service running, which does the job as well. All you have to do is to upload your files, and you'll get at least four formats ready and available, including G.729 - and it can be downloaded easily using TFTP later and used in UCCX.
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