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DIY & Tutorials
DIY For Audio
Jitter, SPDif and other fun stuff
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<blockquote data-quote="gbyleveldt" data-source="post: 39718" data-attributes="member: 122"><p>And, Mr. Ludo, as you so kindly illustrated for us, is the reason why not all "transports" sound the same.</p><p></p><p>But you have two conflicting requirements when looking at SPDif. One, you want a nice square wave with super fast rise times to keep jitter low. But, these super fast rise times give rise (duh) to possible harmonics that may be emitted from the CDP onto your fancy cable that may not be rated for proper shielding at said harmonics. So you have a nice EMI generator and thus product failure with various regulatory bodies.</p><p></p><p>Have a look at the TTL levels coming out of the SPDif generator, the results look muuuuuch better.</p><p></p><p>So the plot thickens...</p></blockquote><p></p>
[QUOTE="gbyleveldt, post: 39718, member: 122"] And, Mr. Ludo, as you so kindly illustrated for us, is the reason why not all "transports" sound the same. But you have two conflicting requirements when looking at SPDif. One, you want a nice square wave with super fast rise times to keep jitter low. But, these super fast rise times give rise (duh) to possible harmonics that may be emitted from the CDP onto your fancy cable that may not be rated for proper shielding at said harmonics. So you have a nice EMI generator and thus product failure with various regulatory bodies. Have a look at the TTL levels coming out of the SPDif generator, the results look muuuuuch better. So the plot thickens... [/QUOTE]
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DIY & Tutorials
DIY For Audio
Jitter, SPDif and other fun stuff
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