[78-L] constant velocity records, was Value of 78's

[David Lennick]

Dnjchi at aol.com wrote:

> Playback might be possible if software could be developed by which the  speed 
> of the download might be increased or decreased (which is it?) linearly  from 
> start to finish.  That is, digitalize at (say) 78, and then use some  program 
> to adjust for playback.  Has this yet been done?
> Don Chichester

Probably fairly easy to do in the digital domain once you know the key in which 
the music should be (roughly), and the fact that World Records showed a playing 
time on the label will help. But there's no guarantee that the speed was 
absolutely constant during the recording process, any more than conventional 
78s are absolutely correct throughout..your ear will have to play a part in the 
processing process.

There were also CV discs made for a juke box around the early 40s. These have 
been mentioned here once or twice and I think Kurt Nauck had some listed a 
couple of years ago.

dl