In Reply to: It is the noise level that I'm looking at. posted by Jim Pearce on January 30, 2003 at 14:25:21:
it is not at all clear to me what information is being presented here. The difference between the top and bottom chart is the presence of a dithered 1 kHz tone. This has effects I do not understand. At 10 kHz, the "digital black" is about -110 dB for SACD and about -120 dB for CD (CD is better by this measure). With the tone, the 10 kHz numbers are still -110 dB for SACD but up to maybe
-108 dB for CD (now SACD is better at this frequency). I don't know what this means. JA seems to refer to the chart with the tone when he discusses "dynamic range". I will need to figure out what tests they are doing and what they mean.
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Follow Ups
- I will need to think about this... - tunenut 14:48:45 01/30/03 (0)