User`s manual

Dolby
®
CP650 Digital Cinema Processor User’s Manual Maintenance and Calibration
3-5
The sound quality of the digital track degrades differently than the analog track. With
any analog track, print wear reduces the quality more or less gradually; the more
wear, the lower the quality of the sound. With a digital soundtrack, wear has no
audible effect until the print is degraded beyond usability (by which time the picture
quality is usually unacceptable, as well). At this point, wear may also exceed the error
correction capabilities of the CP650, and the processor will automatically switch to
playing the analog Dolby SR track.
Figure 3-1 Digital/Analog Track Wear