VO-BB - 20 YEARS OLD!

Adam Verner · Posted: Wed Jan 20, 2010 2:23 pm Post subject: Compression - quality vs. size

I have no idea on this one - anyone had to think about this before?

An upcoming eLearning project has a max file size of 300k per slide including all on-screen graphics Exclamation

Is there any mystical conversion or calculation program that will allow me to know how much audio will fit into a 200-250k file size & still sound decent after compression? Is there a difference in file size between male and female (does one hold up better under compression than the other)?

Any info (on time/length or aprox number of words) will help the writer lay out the script in appropriate sized chunks.

Thanks VOBB group-mind!
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Living Culture · Posted: Sat Jan 30, 2010 10:06 am Post subject:

Besides the actual rate, I think it would be good to use an encoder with Variable Bit Rate if you size/quality ratio is very important.

Have a look here
http://www.mp3-tech.org/tests/gb/index.html
for rate vs quality.

I am sure I have a pretty definitive time/format/rate sheet somewhere, but damned if I can find it.

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Lance Blair · M&M Joined: 03 Jun 2007 Posts: 2281 Location: Atlanta

Sharply rolling off frequencies below 200Hz and above 10kHz will aid in the quality of sound after compression.
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