B.3.12.4
Advanced Audio Encoding
The VCMs support the following coding modes for AAC encoding:
•
The following table gives the coding modes and bit rates for AAC encoding.
Table B.24 Advanced Audio Encoding Specification
Bit Rate (kbps)
32
48
56
64
80
96
112
128
160
192
224
256
320
384
448
512
B.3.12.5
Pass-thru Modes
Clocking
For the best performance when passing through compressed audio the video and
audio coming into the unit must be locked together, and the system clock locked to
Video or Ext SYNC. When set to Ext SYNC, the audio and video must also be
locked to this source.
Dolby Digital
The audio module can pass through pre-encoded Dolby Digital audio (up to 5.1).
EN/LZT 790 0023/1 R16A
Stereo 2/0 (left, right)
AAC-LC
Stereo (2/0)
YES
YES
YES
YES
YES
YES
YES
AAC-LC
HE-AAC
Multi-Channel
Stereo (2/0)
Stereo (3/2L)
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Technical Specification
HE-AACv2
HE-AAC
Multi-Channel
Stereo (3/2L)
YES
YES
YES
YES
YES
YES
B-19