Audio (PPC) File Size

Hello. We have been working with Adobe Presenter to create
presentations/lectures which we ultimately upload to our University
Adobe Connect server. We have been seeing some very annoying
problems with the size of the audio (PPC) file.
On one system, I recorded a lecture that had 60 slides and 60
minutes of audio. The PPC file size is roughly about 30MB.
On another system, I recorded 18 slides with 23 minutes of
audio. The PPC files size is roughly 130MB.
I then took the 2nd presentation I created (130MB) and
attempted to split it into two presentations to get smaller lecture
sizes. I did this via Adobe Presenter and PowerPoint. I cut the
presentation into two presentations, A and B. I then had 2 audio
(PPC) files per part (A & B). The very strange thing was that
the size of the PPC file for each of them (130MB) was the same as
it was when they were combined (130MB). I would think it should
have been less, roughly half but it stayed identical. If I looked
at the audio for part A and then for part B via the 'Audio Editor'
it showed just their audio (so half the minutes as the original)
but why is the size of the audio file the same as the combined
version?
One both the systems I am using to create/record these
presentations, I am running Windows XP with Office 2003. Also, on
each system, the audio quality level is the same.
Please let me know what you think. I appreciate the help.
Bob Schell
University of Colorado Denver

Bob,
I would guess that the file size has mostly to do with the
audio file that was used and what it's recording quality setting
was.
In the end does the PPC file size cause any problems? The
audio may be in WAV format which is good quality but large. When
published the audio is converted to MP3 so the file size should
drop.
Jorma@RealEyes

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You can see what I'm doing at
http://preparatorychemistry.com/Bishop_Audio_Book.htm
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Chemistry guy wrote:
> I'm new to Flash, and I'm trying to decide how to set
the bit rate (kbps) for
> my audio files.
>
> I'm creating PowperPoint-like presentations with voice
audio. You can see what
> I'm doing at
>
>
http://preparatorychemistry.com/Bishop_Audio_Book.htm
>
> I first decided on 16 kbps, but I'm not happy with how
it sounds, especially
> through headphones connected to the computer. My
presentations, of course,
> sound better with higher bit rates, but file sizes
roughly double for each
> doubling of the bit rate. At 16 kbps, my files range
from 1-3 MB, so for 32
> kbps (which I'm leaning toward now), they are 2-6 MB. My
questions are
>
> What's the concensus on the best bit rate for Internet
sound files, especially
> voice?
The best is the import high quality sound in wav format. Than
in library you can
play around with m3p compression changing the rates and all.
Checking the quality
versus the file size and find one that suit your needs. There
is no BEST format to
import. Every single fill have individual setting. It's all
depends on the sound.
Like, in case of voice. Very different to other sounds.
Save it as ADPCM (adaptive pulse code modulation) or Mp3
9kbps as your second choice.
Also take note that STREAM always lower down the quality , it
suppose to load fast so flash reduce
it enormously , usually sound like pure crap, go to library
(CTRL L to open) right click your sound
and go to properties, adjust the compression and type of
audio format to find best size and quality...
> How important is it to minimize files size? The files
are already large enough
> so that dial-up folks will probably not listen to them,
and even the larger
> files seem to download fast enough with my cable
connection.
You would be surprised. I was doing voice overs two or 3
weeks ago for a client.
Needed 5 sounds , up to two minutes each, for different
slides. Ranging from 2.5 MB
to 2.9 MB per file.
After compressing all of them, I had 5 sounds in very good
quality of total size 1.4 MB
Best Regards
Urami
<urami>
If you want to mail me - DO NOT LAUGH AT MY ADDRESS
</urami>

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NTFS Raid 0 Drive
SpeedGrade 2014.0.1
******BUG******
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Split using scene changes detect.
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Applied looks (most of the time, i just use default cinematic 2 with a little bit adjustment)
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Message was edited by: bill gates
Reason : Adding info

>Multiplexing: None
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Joe C.

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recordinghouse wrote:
does anyone know of a widget that can calculate audio file size by entering sample rate, bit depth, duration? i have searched and cant really find anything...
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