KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using the VA-256P Digital Audio Delay
6
5.2 Using the VA-256P as an Audio Delay Line in the Studio Environment
The
VA-256P
compensates for video processing delay time, as illustrated in
the example shown in Figure 3. In this example, a digital video player outputs
its digital video signal to a video processor (for example, the
SP-11D
Digital
Video Processor
) and its digital audio signal to the
VA-256P
.
The
DELAY
1
time on the
VA-256P
is set to compensate for the digital video signal
processing time. So, while the video signal is processed, the audio signal is
delayed, via the
VA-256P
, to maintain synchronization between video and
audio as both signals enter the studio mixer.
Video Processor
Digital Audio Delay
Studio Mixer
+
-
FREEZE
PANEL LOCK
RECALL
PAL B
PAL B
YUV
CV
RGB
YC
RGBS
YUV
SDI
PAL N
PAL N
PAL M
NTSC 3
NTSC 4
NTSC 4
SECAM
SECAM
OUTPUT
AUTO
INPUT
HUE
GAIN
H-SHIFT
V-SHIFT
Y/GREEN
U/BLUE
V/RED
CONTRAST
H-SHARP
DELAY
YUV
RGB
GENLOCK
BRIGHT
V-SHARP
SPLITT ER
SCH
STORE
POW ER
Video In
Delayed
Digital Audio Out
Video Out
Digital Video Player
Digital Audio
Out
Audio In
Figure 3: Using the VA-256P Digital Audio Delay in the Studio Environment
1 See section 5.3
