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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Do all Blu-ray players sound the same? posted by Diogenes on January 6, 2015 at 18:08:35:
Do not believe that, they do not all sound the same. The notion that all digital sources sound the same has been circulating since the first mass market CD players appeared in the mid-1980s. I find it amusing when one person declares that because they don't hear a difference through their ears and equipment, that there is no difference that anyone else can hear either. While certainly not all player analog outputs sound the same, even the streaming digital audio output signals (typically, S/PDIF) don't all sound the same. This is true even though such digital streams may be bit identical. The reason for that is differences in the jitter profile of their respective digital streams.Jitter profiles will vary due to differences in each player's clock generator circuit, power supply noise, digital interface common-mode noise coupling and digital interface impedance mismatch. The external DAC at the other end of the digital interface will typically use the timing built into the digital signal stream as the basis for it's own timing reference. Jitter on the digital stream from the player results in jitter on the external DAC's conversion timing instants that could be audible.
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Ken Newton
Edits: 01/07/15
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- RE: Do all Blu-ray players sound the same? - knewton 06:25:33 01/07/15 (0)
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