?
2007-01-28 05:02:48 · 3 answers · asked by x me x 2 in Consumer Electronics ➔ Other - Electronics
A needle traveling in the groove is made to vibrate by the hills and valleys in the sides of the groove. The vibrations cause a small electric current, which tells the amp how much juice to send to the speakers.
2007-01-28 05:15:53 · answer #1 · answered by Bill 3 · 1⤊ 0⤋
I'm not really sure how they store the sound on vinyl LPs, but I think the sound is produced by the stylus/needle passing through varying widths of the groove. The varying widths correspond to pressure changes, and the different positions along the groove relates to time. I think these two variables produce the frequency changes to produce the sound. When stereo came out, the grooves had two channels in them, and the needle had a tiny V , or split, so each half of the groove had 1/2 the needle to run through it.
2007-01-28 05:37:05 · answer #2 · answered by The Count 7 · 0⤊ 0⤋
As above, but on the original monophonic records the groove went from side to side. On the new-fangled stereophonic ones, the groove went up and down as well.
2007-01-28 05:29:59 · answer #3 · answered by Stephen L 7 · 0⤊ 0⤋