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

[David Lennick]

joe at salerno.com wrote:
> the World label was available at least during 1923 and 1924 and are 
> almost totally unique
>> among 78s produced for commercial sale: they are not meant to play at a consistent
>> speed!  In order to keep the velocity of the record consistent, a special mechanism was
>> attached to the gramophone to speed up the record as the soundbox moved over it. 
> 
> has anyone ever figured out a speed change formula for transferring a 
> constant velocity record?
> 
> Or is it dependent on the record size or something?
> 
> joe salerno
> 

Norman Field, who hasn't returned to this list, transferred at least one World 
some years ago and sent me a copy. Mind you, it was spoken word (a Fred Duprez 
routine). Variations in speaking pitch can be just as audible as variations in 
music, but I don't know if he successfully transferred music.

dl