>Has anyone any experience with the difference in streaming and performance
>with 8 bit mono, 16 bit mono and 16 bit stereo. I mean, should one always
>go for the better quality?
John,
Colin's right--if you use Shockwave audio, you need 16-bit source. (This is
disturbing--Colin & I have agreed twice in a row ;-)
We recently did a project where the client provided us with 8-bit source
audio. The Shockwave audio sounded really, really awful--tinny,
static-ridden, barely audible. We took the 8-bit source into Sound Forge,
saved it as 16-bit, and voila! Perfectly fine sound. (Credit where it's
due--it was my brother Bryan who figured this one out. He's out there
lurking, I know :-)
As for mono vs. stereo, mono is fine for voice, and usually, at lower bit
rates especially, ok for music as well. If your source is stereo, the
Publish Settings dialog in D8 will let you convert it to mono. The question
to ask is, do you need stereo? Are you doing any sound panning? Will it
improve the music quality?
More important for quality is the bit rate, which you can control from the
same Publish Settings dialog (under compression). Depending on your target
audience, you can set the Shockwave audio from 16 - 160 Kbps. The higher
bit rate, the better quality. The tradeoff is, of course, that your
audience will need faster connections.
Also consider the quality of your source. If it is 11 KHz, you're not going
to gain much in Shockwave quality by upping the bit rate--11 KHz is voice
quality, similar to AM radio. If your source was recorded at a higher
quality, like Red Book (44.1/16), you will get better quality at a higher
bit rate.
Cordially,
Kerry Thompson
Learning Network
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