Available space on a CD

Pro Audio Asylum

Pro studio recording equipment and music production/industry.

One thing I don't quite understand. Why is a standard CD limited to 74 minutes playing time?
I thought it would be a good idea to backup my record collection on CD. The idea was to ease the problem of playing the records. Some are on 78's, which nowadays means a separate turntable. Some are on LP, EP, and SP. Some are on Â¼" loose reel tape, and some are on cassette. I've even got one record which is a 10" shellac playing at 45 rpm using a 78 needle! The quality of most of these records is mono lo-fi as the originals were recorded in the period 1917-1940.
To make this operation as cheap as possible, I thought I would record at 22kHz 8 bits. When I transfer a record to the computer (*.wav) at max. quality a minute of music uses about 9MB, whereas at 22kHz a minute uses about 2 MB.
Why can't I put four times the number of records on a CD at the lower quality?
I've not found a URL that can help me with this question.
Any help would be helpful - thanks

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Topic - Available space on a CD - Bob Smith 06:20:23 08/19/01 (5)

Re: Available space on a CD - RBP 06:43:09 08/19/01 (4)

Re: Available space on a CD - Bob Smith 09:27:24 08/19/01 (3)

Re: Available space on a CD - Paul C. 17:29:13 08/21/01 (2)

Re: Available space on a CD - Bob Smith 00:01:30 08/23/01 (1)

your DVD player will not play mp3s on a CD.... - brew 20:39:20 10/04/01 (0)

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