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- From: michael@stb.info.com (Michael Gersten)
- Newsgroups: comp.sys.next.misc
- Subject: Re: Speed of next CD?
- Message-ID: <1993Jan26.173611.2309@stb.info.com>
- Date: 26 Jan 93 17:36:11 GMT
- References: <1993Jan10.180508.369@stb.info.com>
- Organization: STB BBS, La, Ca, 310 397 3137
- Lines: 23
-
- 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,...)
-