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To: DoodleBob
I've had a serious love of music...just about every kind of music...since I was a kid. I've spent tons of $$$ on equipment and LPs. But with the advent of CDs,CD burners and my area's library network I've amassed a collection of about 6,000 songs,all in perfect fidelity (with no pops),most of which I love. And I can play them in my car and on my phone!

LP's? No thanks! CDs are one bit of modernity that I love.

22 posted on 10/24/2021 5:28:30 PM PDT by Gay State Conservative (Covid Is All About Mail In Balloting)
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To: Gay State Conservative

How’d you keep the jewel case hinges from breaking, eventually causing CDs to scatter hither and yon? Hated that problem and it prevented me from continuing to purchase CDs after being a reasonably avid vinyl LP collector.


33 posted on 10/24/2021 5:41:44 PM PDT by one guy in new jersey
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To: Gay State Conservative

“CDs are one bit of modernity that I love.”

Not so modern any more but there’s a lot of drama going on inside the DVD player. It picks the music out of the grooves with a laser focused with a lens. The disk is not entirely flat so the laser follows the groove which goes up and down. The hole in the CD is not exactly in the center so the laser follows the sashaying groove. Also, since the hole is not exactly in the center and for other mechanical reasons the bits don’t come off the disk at an constant rate. So the raw bit stream is buffered and pulled out of the buffer and a constant rate. If bits are coming off the disk too fast, which would overflow the buffer, the rotation is slowed down. If the player is jostled and the laser jumps off the track, that is detected and the laser is moved to the correct track with the buffering allowing the user to not know about the track-jumping.


78 posted on 10/25/2021 4:45:05 AM PDT by cymbeline
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