Dolby Laboratories 585 - Manual (Page 23)

Model 585 Time Scaling Processor
3-1
Chapter 3
Time Scaling
Time scaling alters the duration of an audio signal, but leaves the perceived pitch
unchanged from the original signal. Model 585 offers stand-alone, high-quality
multichannel time scaling of short program segments by using the
Transport
menu.
At the standard 48 kHz sampling rate, Model 585 can store approximately 23 minutes
of mono, 11.5 minutes of stereo, 6 minutes of four-channel, 4 minutes of 5.1-channel,
or almost 3 minutes of eight-channel audio material. If the sampling rate changes, the
storage capacity changes inversely: for example, a ten-percent reduction in sampling
rate gives a ten-percent increase in storage capacity.
Model 585 also can be used in combination with other products to deliver continuous,
online time scaling of longer programs.
3.1 Transport Menu
You can use the Transport menu to record an audio clip to internal memory and
play back the clip time scaled at a rate within a range of ±15 percent.
In the Transport menu, the front-panel controls perform different tasks than in all
other menus. This gives you access to the separate set of controls time scaling
requires.
The Transport menu includes Play, Record, and Program Select
menus. Entering either the Play or Record menu disables pitch shifting and
reconfigures the four center buttons to trigger the function illustrated on the display
above the button.