[Mr.T]

"don ward" wrote in message
...
Radio transcription companies solved the need for "radial equalization"
by using the Western Electric Vertical recording system.
The modulation is esentially up and and down in the groove instead of
laterally and it virtually immune to the difference in diameter between
the inside and outside of the recording diameter

Since the change in the linear groove velocity is the same in either case,
can you explain why vertical modulation will be "virtually" immune from the
effects of reduced velocity?

MrT.