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In Reply to: Jim, can you explain? posted by Eric LeRouge on May 7, 2003 at 10:45:38:
For example, 48/24 is "corrected" to 48/20 since only 20 bits are audible with current technology. Hence the bit rate is 960 kHz, versus 2822 for DSD (Index=100), or 33.33 (oops - I said 34). The logarithmic scale is just a conjecture, but seems to work in many audio contexts. What I like is that digital audio divides up rather neatly into two groups with relatively fine differences among them. Obviously, 96/24, SACD and 192/24 is the Hi Rez group.By the way, the redundancy in PCM is not a bad thing. As frank has pointed out, BM chews up two bits - bits which SACD doesn't have to spare.
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Follow Ups
- Eric, it is a pure data rate calculation. - Jim Pearce 11:14:01 05/07/03 (2)
- Re: Eric, it is a pure data rate calculation. - Eric LeRouge 15:21:07 05/07/03 (1)
- In theory, 141.1/20 could be done without oversampling, - Jim Pearce 06:30:05 05/08/03 (0)
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