Thread View: comp.sys.next.misc
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Started by Michael Gersten
Sun, 10 Jan 1993 18:05
Speed of next CD?
Author: Michael Gersten
Date: Sun, 10 Jan 1993 18:05
Date: Sun, 10 Jan 1993 18:05
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Does anyone know what the speed of the next CD rom drive is? Both seek time and throughput bytes/sec? Please reply by mail, and I'll summarize. (I'm a month behind reading this stuff) Michael -- Michael Gersten michael@stb.info.com NeXT Registered Developer (NeRD) # 3860 -- Hire me! Quick! Will program computers for food (and net connection, health benefits, cash,...)
Re: Speed of next CD?
Author: Michael Gersten
Date: Tue, 26 Jan 1993 17:36
Date: Tue, 26 Jan 1993 17:36
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In article <1993Jan10.180508.369@stb.info.com>, I wrote: >Does anyone know what the speed of the next CD rom drive is? >Both seek time and throughput bytes/sec? > >Please reply by mail, and I'll summarize. Ok, here's the summary, as promised: Data transfer rate: Sustained: 150 KB/Sec Burst: 1200 KB/Sec Access time: Full stroke: 0.7 sec (typical) Avg (1/3 stroke): 0.45 sec (typical) Now, 44K samples per second, at 2 bytes per sample, two channels is 88 + 88 = 176 KB/Sec; 176/150 is about 2338/2048 (audio CD vs data CD block size), so this is exactly as fast as needed for audio, no faster. -- Michael Gersten michael@stb.info.com NeXT Registered Developer (NeRD) # 3860 -- Hire me! Quick! Will program computers for food (and net connection, health benefits, cash,...)
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