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From: zerobeat@xxxxxxxxx.xxxxxxxxxxxxxxxxxx)
Date: Thu, 18 Nov 1999 at 5:00:12 PM
Subject: Re: SV: Bouncing - possible answers? DAT question
Message #7931
From the digido website: >""Playback from a DAT recorder usually sounds better than the recording, >because there is less jitter. Remember, a DAT machine on playback puts out >numbers from an internal RAM buffer memory, locked to its internal crystal >clock. A DAT machine that is recording (from its digital input) is locked >to the source via its (relatively jittery) Phase Locked Loop. As the >figure >above illustrates, the numbers still get recorded correctly on tape, >although their timebase was jittery while going in. Nevertheless, on >playback, that time base error becomes irrelevant, for the numbers are >reclocked by the DAT machine!"" This is true, but the problem is that most people end up misunderstanding what jitter actually is, and how it can't possibly change the actual data itself. In other words, if you playback your digital audio with bad jitter, but digitally transfer to a system with good jitter, you will hear an improvement. The jitter simply refers to the inability to spit out the bits in an orderly fashion through the digital-to-analog convertor, but it has nothing to do with the inability to *digitally* transfer the audio from one system to another, either via AES or S/PDIF or via SCSI or IDE. f-erenc "Without chemicals, he points"
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