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Old 14th July 2009   #54
space2012
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Join Date: Oct 2008
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Quote:
Originally Posted by rogerbrain View Post
related question.. does jitter increase or decrease with sample rate? is a clock more stable or less stable at higher sample rates?
Thats called Aperture error.

higher sample rates need smaller clock pulses per second.
higher sample rate needs smaller jitter, becouse same jitter affects more the smaller clock pulses.

Analog-to-digital converter - Wikipedia, the free encyclopedia

problem with x2 x4 sample rates its the DAC, some consumer level DACs sound much better at x2 x4 sample rates,
... recording at x2 or x4 sample rates needs a more accurate clock, but thats not a problem with Atomic Clocks like Teac Esoteric or Antelope 10M.

processing at double or quad sample rates also needs more DSP/CPU.
but the DSP is not a problem these days with new i7, Xite-1, FX Max Teleport, etc...

another problem is processing at 2x or 4x, some plugins are not well designed, and frequency range changes drastically when used at 2x or 4x.

take a listen in diferent DACS this test:
Otari vs. Studer vs. MCI using Bounced ITB Mix

http://src.infinitewave.ca/ SRC Comparisons
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