I wonder if the talking doll recordings were hill and dale or lateral grooves. Anyone know?
Iím just curious.
On May 6, 2015, at 12:17 PM, Paul Stamler <[log in to unmask]> wrote:
> This is a linguistic issue, more than anything else. In the last 20 years, the word "phase" has come to be used where "polarity" would really be a more accurate description, and that'd hoe the word's being used in this context. A hill-and-dale (vertical) recording has the signal impressed on the groove vertically (duh), and when played back with a conventional stereo cartridge it will deliver signals from the two channels that are of opposite polarity. Combine the signals as-is and the desired material (music) will cancel, leaving only noise. Reverse the polarity of one channel, then combine them, and the desired signal will remain while the noise (ideally) cancels.