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Redbox RB-PD2 User Handbook
SYNCHRONISERS, DELAYS &
SILENCE DETECTORS
SY
NCHR
ONISERS, DEL
A
Y
S & SILENCE DE
TEC
TORS - RB
-PD2
8
The BUILD DELAY Button
The BUILD DELAY button activates the build delay mode when the audio stretch algorithm
starts to silently build up audio delay. This mode can only be entered if the unit is at zero
delay or in exit delay mode. The audio stretch algorithm builds the delay based on the
current build/exit speed (the Delay Build/Exit Speed – see page 83).
The actual operation will depend on the current delay and the currently selected start mode.
If the current delay is zero, the delay will build using the selected start mode. However, if the
current delay is greater than zero i.e. some delay has already been acquired, the automatic
audio stretch algorithm is activated to build the delay to the selected value.
The BUILD DELAY button is illuminated red whilst the delay is being acquired and the
status line on the display will show either “PLAYING DELAY START FILE” or “BUILDING DELAY”
depending on which build mode is active. Once the delay reaches the pre-selected value, the
BUILD DELAY button is illuminated green and the status line shows “DELAY OK”.
This mode can only be activated if the unit is currently in build delay mode or is at the
currently selected delay (shown via the status line on the display).
The EXIT DELAY button is illuminated red whilst the delay is being reduced and the status
line will show “EXITING DELAY”. Once the delay has been reduced to zero, the EXIT DELAY
button will illuminate green for 1.5 seconds and the status line on the display will show
“ZERO DELAY”.
The COUGH Button
The COUGH button activates the cough function which allows unwanted audio that is about
to be presented to the audio inputs to be discarded. The cough function is only active whilst
the COUGH button is pressed.
The COUGH button is illuminated red and the status line on the display will show “COUGH
ACTIVE”. The current delay shown on the display will count down whilst the button is
pressed. If the COUGH button continues to be pressed and the current delay counts down to
0, the audio outputs will be muted until the COUGH button is released.
When the unwanted noise has passed, the COUGH button can be released and the status
line will indicate the current state. If the exit delay mode was active prior to the cough
function, the status line will show “EXITING DELAY” unless the delay has reached 0, in which
case the status line will show “ZERO DELAY”. Otherwise the build delay mode will re-engage
and status line will show “BUILDING DELAY”.
Fig 8-4: RB-PD2 Front Panel Buttons
The EXIT DELAY Button
The EXIT DELAY button activates the exit delay
mode when the audio delay is reduced to zero.
The delay ramps down at the rate specified by
the current build/exit speed (the Delay Build/
Exit Speed – see page 83).