Model 585 Time Scaling Processor Applications
5-3
Figure 5-2 Single-Pass Pitch Shifting
In Figure 5-2, the source program video and audio are delivered separately. The
playback VTR is used to adjust the speed of the program to conform to the
requirements for final delivery. The playback VTR also sends timecode to the
multitrack DTRS, which adjusts the speed of the multichannel audio. Model 585
compensates for the speed change by adjusting the pitch shifting to the opposite
value, as discussed in section 4.2. By advancing the audio timecode by the same
value as the delay setting on Model 585, you send synchronized audio and video in a
program that is time scaled. The time scaled program is ready for either immediate
broadcast, or recording onto a new master tape.
The amount of pitch shifting required is roughly opposite in value to the playback
speed adjustment. See Section 4.1, Adjusting the Pitch Shifting Value, for details on
how to set the pitch shifting value.