3 ms·
Another reason for turning it by 45 degrees is backward compatibility. If you play a stereo disc on a mono player you want to get a "mix" of the channels instea
by zs 17y ago
Another reason for turning it by 45 degrees is backward compatibility. If you play a stereo disc on a mono player you want to get a "mix" of the channels instead of one of the channels.
- nazgulnarsil 17y agothat doesn't seem like it would work.
- jonsen 17y agoIn a stereo recording, the two channels are arranged to drive the record cutter head at an angle of 45° to the vertical, effectively encoding each channel in the left and right V-shaped walls of the record groove. This system worked well, since it provided full compatibility with a monaural pick-up, so stereo records could be played on older mono equipment. From: http://en.wikipedia.org/wiki/Magnetic_cartridge#Stereo_reproduction http://en.wikipedia.org/wiki/Magnetic_cartridge#Stereo_repro... See drawings of pick-ups above on that page. The vertical movement of a monaural pick-up stylus will be the sum of the two stereo movements. Each channel contributing with an sqrt(2)/2 amplitude of its 45° amplitude.
- nazgulnarsil 17y agothanks, I was trying to work the math in my head and was making it WAY harder than it needed to be.