[Dtb-talk] Converting tone indexed books to DAISY

[Kafka's Daytime]

1. Copying from one high speed tape machine to another is something  
different than what is being talked about here.

2. When digitizing taped audio played at high speed: the higher the  
speed, the more bandwidth you lose...and there is a limit to the  
amount of pitch shifting you can do (to return audio to normal speed)  
without introducing significant artifacts into the audio.

Joe

On Dec 28, 2006, at 3:52 PM, DanFlasar at aol.com wrote:

>     Actually, there is no reason to assume that copying at high  
> speed makes any difference in quality.  In the days of reel-to-reel  
> recording, the slower speeds offered the least quality, probably  
> because you had less 'granularity' on the tape.  Hence the faster  
> speeds offered the best reproduction.  I'm sure there has to be a  
> limit to the speed but industrial recording dupers run at very high  
> speeds indeed and the quality is fine.
> Dan
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