In Reply to: They tell why on the same page posted by Frank on January 30, 2003 at 14:44:03:
it can be found in the latest Stereophile, in the review of the Ayre D1 DVD/CD player. The plot for the spectrum given the dithered 1 kHz signal is substantially identical to that of the Meridian 508.24. It rises to -108 dB at 10 kHz.They say in the write-up that the noise floor in this graph is the same as the noise floor of the dither in the input signal.
That is your answer. This has nothing to do with noise shaping. They are inputting a signal with a rising noise floor, so that is what they are getting at their output.
This is why all the Stereophile graphs of this test output look pretty much the same.
Certainly, the noise shaper is not moving any signal energy. Nothing of the sort happens.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- here is the correct reason... - tunenut 16:57:14 01/30/03 (14)
- No, - Frank 03:01:56 01/31/03 (0)
- Yes and no. - Jim Pearce 20:31:48 01/30/03 (9)
- I am only talking about CD players now... - tunenut 21:05:54 01/30/03 (8)
- It makes no sense... - Frank 04:39:29 01/31/03 (1)
- Re: It makes no sense... - Jim Pearce 08:01:45 01/31/03 (0)
- Agreed. - Jim Pearce 21:15:17 01/30/03 (5)
- The DSD sample rate for the sacd implementation - Frank 03:13:04 01/31/03 (0)
- don't know - tunenut 21:22:35 01/30/03 (3)
- The obvious conclusions are.. - Jim Pearce 21:40:37 01/30/03 (2)
- here is the best I can do right now... - tunenut 21:54:11 01/30/03 (1)
- JA is going to write a series of articles on the tests. - Jim Pearce 22:19:10 01/30/03 (0)
- thank you - that makes sense - Christine Tham 18:21:26 01/30/03 (2)
- That's right Christine, they're just graphs of the.. - Jim Pearce 20:44:21 01/30/03 (1)
- can you please go easy on the sarcasm? - Christine Tham 21:39:58 01/30/03 (0)