VO-BB - 19 YEARS OLD!

Frank F · Posted: Tue Jul 31, 2007 10:52 am Post subject:

Melissa,

The only "difference" is the how the file handles the audio.

A 44,100 kHz MONO file has a big pipe to fill with the mono audio.

A 44,100 kHz STEREO file is basically just two 22,050 audio tracks - linked together into the same audio file. This is what your clients is asking for - two 22,050 tracks.

So if you use AA to record your MONO file, then, select the entire edited file and click Edit> Convert Sample Type> set rate to (your choice), Channels to Stereo, and Resolution to 16 bit - - and click O.K!

Viola! you now have a stereo file which you can Save as an .mp3 with your choice of bit rates. Now send the STEREO file to your client.

Frank F
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Jeffrey Kafer · Posted: Tue Jul 31, 2007 10:52 am Post subject:

DaveChristi · Posted: Tue Jul 31, 2007 10:57 am Post subject:

128kbps stereo is 64kbps per channel, yes (not 96 like I mentioned previously... no one said I was a math wiz). All my discs are ripped in at 320kbps. 128kbps stereo is considered "internet quality".
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Jeffrey Kafer · Posted: Tue Jul 31, 2007 10:58 am Post subject:

Frank F · Posted: Tue Jul 31, 2007 11:01 am Post subject:

Jeffery,

Dave is correct, technically it IS 64 kbps per side, but as it is linked (L, -R; L +R, L,R; etc,) the audio becomes a 128 kbps. I have listened to some really nice STEREO audio at 64 kbps .mp3.

A lot of the quality depends upon the original .wav or .aiff when encoding. Do not overdrive the signal, do not over compress the signal, do not... and you may have a very GOOD quality for listening... No, it is not 96,000 kHz, multi-channel surround sound - but it is enjoyable.

Toodles

Frank F
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Be thankful for the bad things in life. They opened your eyes to the good things you weren't paying attention to before. email: thevoice@usa.com

Jeffrey Kafer · Posted: Tue Jul 31, 2007 11:04 am Post subject:

you guys are killing me here. All my preconceived notions are being tossed out the window.

I'm gonna do a test tonight and post what I find...
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Jeff
http://JeffreyKafer.com
Voice-overload Web comic: http://voice-overload.com

Frank F · Posted: Tue Jul 31, 2007 11:05 am Post subject:

Jeff, et al -

What you think you hear vs. what is really being heard by your ears is called "audio perception",

LOL

F2
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DaveChristi · Posted: Tue Jul 31, 2007 11:17 am Post subject:

One thing to consider when it comes to quality is the dynamic range of the source being recorded. Example:

Human voices are roughly in the range of 80 Hz to 1100 Hz. A 128kbps mono MP3 file should not lose ANY of this range.

The audible frequency range is roughly 20 Hz to 20 000 Hz. I would not trust even the best quality MP3s to capture this entire range well.

So if you're recording dry vocal, 128kbps mono or 256kbps stereo would be just fine.

However, I wouldn't record the London Symphony Orchestra as ANY kind of MP3. (I have however converted such CD's for my own listening enjoyment to MP3)
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Dave "Christi" Felton
The Character Voice Actor

jrodriguez315 · Posted: Tue Jul 31, 2007 11:23 am Post subject:

Man, you guys are giving me a headache.
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Joe Rodriguez, Bilingual Voice Actor | The Voiceover Thespian Blog

CarynClark · Posted: Tue Jul 31, 2007 11:59 am Post subject:

What a bunch a brainiacs. Holy cow!
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Doc · Guest

I'm gonna stick my toe in the water here.

What this client may be wanting is separated tracks so that in post-production they can play with panning, phlanging, etc. In the old school, this is how we accomplished such tasks.

If so, simply record your master v.o. track in AA, then go to Session, drag and drop the file on the time line. Then, while holding down Ctrl, right-click on the voice track timeline and drag it down to the next channel, keeping it flush to the 00 marker (so as not to get any phasing).

Then, adjust the Pan control on one channel full-left, on the other channel, full-right and mix em down and save the voice track.

Seems like a long way to go, however, for something they could quite-easily do on their end in post.

Shocked

MelissaVoicer · Guest

Dave, thanks, and I know...They're in essence getting 2 channels of 64kbps each actually...but that's what they want. They will not accept higher bit rate files...I just need to do what they want and keep them happy and not worry about the facts of the situation...ya know? Smile

Thanks for all the advice. and I'm an f-11 fan myself. Smile

sdelgo · Posted: Tue Jul 31, 2007 12:52 pm Post subject:

Melissa,

Is the content just vox or vox and a backing bed?
Maybe the client is looking for a little stereo imaging in the background music or efx.

Steve
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BenWils · Posted: Tue Jul 31, 2007 2:08 pm Post subject:

This makes absolutely no sense at all. Like others have said, the audio is identical in both tracks. Period. Unless you buy a stereo mic or record with two mics in your face and then run through two channels, you will not have a true stereo signal.

And sample rate is just that.....the number of times the incoming audio is sampled per second. So for 44.1 kHz....you get 44,100 samples per second of your voice or whatever you are recording. This creates more clarity when go up to 48kHz or 96kHz or higher....thus the calling of these recorded signals "HD" or high definition.
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Ben

"To be really good at voiceover, you need to improve your footwork and hip snap."

Jeffrey Kafer · Posted: Tue Jul 31, 2007 2:44 pm Post subject:

The sampling rate really only defines the frequency range. The bit depth is the clarity because it's the value that holds more or less data.

This is why you can fairly safely record at a low sampling rate for talking. But a low bit depth will introduce more noise in the gaps between words.
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Jeff
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