July 2013
Intermediate to advanced
419 pages
14h 24m
English
Content preview from Introduction to Digital Audio, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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8
Digital audio tape recorders
Tape recording is divided into stationary head and rotary-head recorders. In this chapter the two systems will be contrasted and illustrated with examples from actual formats. The reader is referred to Chapter 6 for an explanation of coding and error-correction principles.
8.1 Rotary versus stationary heads
The high bit rate required for digital audio can be recorded in two ways. The head can remain fixed, and the tape can be transported rapidly, or the tape can travel relatively slowly, and the head can be moved. The latter is the principle of the rotary-head recorder.
In helical-scan recorders, shown in Figure 8.1, the tape is wrapped around the drum in such a way that it enters and leaves in two different planes. ...
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