Re: [ARSCLIST] NY Times: Researchers Play Tune Recorded before Edison

["joe@xxxxxxxxxxx" <jsalerno@xxxxxxxxxxxxx>]

What would be the advanatage of cutting the underside of the record - to 
allow the chip to fall away and entangling it in the cutter?

joe salerno

(can't type my name upside down)


Michael Shoshani wrote:
> Steven C. Barr(x) wrote:
>
> > What Emile Berliner perfected...to be exact...was the lateral-cut flat
> > disc record/player...! Edison had apparently experimented with both,
> > but being a perfectionist, figured out that the fidelity of a flat
> > record would vary slightly between first and last turn of the spiral...
> > while a cylinder record would play at the same rate from first to last
> > turn (especially if the reproducer was driven across the cylinder by
> > a feedscrew...!). The difference was that flat disc records could be
> > stamped out in quantity, while cylinders were not moulded until early
> > in the 20th century...!
>
> Bell and Tainter also experimented with discs, although I don't recall 
> whether or not they did anything with lateral modulation. But their 
> patent application, like that of Edison, illustrates disc machines - 
> including one that apparently records by cutting the underside of the disc!
>
> Michael Shoshani