Re: Some stories
- From: "Andreas Stefik" <stefika@xxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Sun, 10 Feb 2008 14:02:45 -0800
Matthew,
The short answer to your question is that the human auditory system is
actually quite complex and doesn't follow very many easy rules of
thumb. The problem is that humans, unfortunately, don't quite model
the old Miller 7 + or - 2 rule for speech based recall, they measure
it in seconds of recall, and the way humans understand language is
complex and highly context dependent.
And worse, the complexity doesn't end there, as masking effects can
take place (characters embedded in the audio stream which have no
relevance). Certain word choices have far more meaning than others,
and prosodic cues (voice inflection), can also cause significant
effects. So, making a good environment requires that you tackle all
sorts of variables. Speed is absolutely important. Lots of other
variables are important as well.
It's pretty tough to get the mix "just right."
Andreas
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