Dolby Laboratories 585 - Manual (Page 19)

Model 585 Time Scaling Processor Getting Started
2-9
Channel assignments within each program configuration follow standard mapping, as
shown in Table 7-1 in Chapter 7, Reference Data. The only exception is the low-
frequency effects (LFE) channel, which can also be assigned manually, as described
in Section 2.6.2, Operating Mode.
2.6.2 Operating Mode
In the Operating Mode menu, you have six options: Sensitivity , Pitch ,
Processing Delay , Clock Source , DC Filter , and LFE Channel .
Sensitivity
Model 585 is able to perform high-quality time scaling of complex audio material
because, in a manner comparable to that used by human listeners, it analyzes and
identifies the individual audio components and processes them independently. The
Sensitivity setting allows you to adjust the level of processing detail Model 585
applies to the audio material. The default setting, 5–high , provides the most detailed
processing and is appropriate for nearly all material.
For some material, however, the 5–high setting may be too sensitive, causing
Model 585 to focus on subtle audio elements that can interfere with the processing of
the most prominent material. In this case, Model 585 may not produce its best results.
For example, if material with a live audience is being processed and the
Sensitivity setting is too high, Model 585 may focus on elements of audience or
ambient sounds to the detriment of the primary audio material.
As you decrease the Sensitivity setting, less prominent elements of the audio
material are processed less intensively, reducing the impact on the most prominent
elements. If the
Sensitivity setting is too low, however, important elements of
the audio may not be processed correctly.
The Sensitivity setting can be adjusted in real time using the front-panel
controls.
If you alter the setting using the Sensitivity submenu, you are able to “cue up”
different settings. For example, you can be processing audio at one setting, select a
new setting and then press enter to activate the new setting as required.
In addition to adjusting this setting directly within the Sensitivity submenu, you
can also make the adjustment from the main status menu by rotating the knob while
pressing
Shift. If you do so, however, the adjustment is immediately activated, and
you cannot return to the previous value by pressing Esc .