Cisco D9054 Installation And Operation Manual page 36

Audio and Data Interfaces,
Dolby Digital Encoding
The audio inputs may be encoded in the following ways:
• Dual Mono 1+1
• Stereo 2/0
• Mono 1/0
• 3/2 (L,R,C,Ls,Rs)
You can set the sampling frequency for the digitizing process to one of the
following values:
• 32 kHz
• 44.1 kHz
• 48 kHz
The D9054 HD Encoder locks the audio sampling frequency to the video. For AES/
EBU digital input signals, the D9054 HD Encoder automatically adapts the
incoming rate by using sample rate conversion.
Dolby Digital Passthrough
The D9054 HD Encoder supports passthrough of up to six pre-encoded Dolby
Digital stereo channels.
AAC Internal Encoding or Passthrough
The D9054 HD Encoder supports internal AAC audio encoding or passthrough of
up to six pre-encoded AAC channels.
Linear Audio and Dolby E Passthrough
The D9054 HD Encoder supports passthrough of up to six pre-encoded Dolby E
channels. It also supports Linear audio.
Audio Only
The D9054 HD Encoder supports eight audio-only programs. One or more audio
sources can be combined to make up a program.
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D9054 HDTV Encoder Intstallation and Operation Guide 4038938 Rev A