Extron Electronics DMP 128 User Guide - Manual (Page 55)

Delay (DLY)
The delay processor block, when inserted, provides a means to delay the audio signal.
Audio delay syncs audio to video or can time-align speakers that are placed at different
distances from the listener. The DMP 128 can set delay by either of two criteria: time or
distance (feet or meters).
The default unit setting is time with a range of 0.0 ms to 200.0 ms adjustable in 0.1 ms
steps. Default is 100.0 ms.
Settings are controlled with a vertical slider and indicated in the readout field. Click within
the readout field to change the value, or change the number, then press <Enter>, or press
<Tab>, or click away from the field.
Figure 31. Delay Dialog
Slider adjustments made in feet or meters correspond incrementally to the distance
required to make 1 ms, or 5 ms adjustments (detailed in the table below). If more precision
is required, enter time in 0.1 ms increments into the readout field.
method Time Feet meters
Click + drag 1 ms ~1.1 feet ~0.3 m
Focus + arrow 1 ms ~1.1 feet ~0.3 m
Focus + Page Up/Down 5 ms ~5.6 feet ~1.7 m
When distance (feet or meters) is chosen, the conditions (temperature) field becomes
available and can be set either by degrees Fahrenheit or Celsius by clicking the
appropriate selection button. When entering a distance, time delay compensation is
automatically modified based on differences in the speed of sound due to air temperature.
Default is 70 degrees Fahrenheit.
notE: When using distance (feet or meters), set a temperature value first, then set
the distance.
DMP 128 • Software Control 49