Cisco D9054 Installation And Operation Manual page 131

Setting Up the Layer II Audio Input,
8. Select the Sample Rate of the signal.
Set the sampling rate to 32, 44.1 or 48 kHz.
Note: It is not recommended to increase the encoding sample rate above the
input sample rate.
Note: For the lowest audio bit rates use the lowest sample rate for improved
quality.
9. Set the Bit Rate of the signal.
The legal bit rates for Layer II encoding are 32, 48, 56, 64, 80, 96, 112, 128, 160,
192, 224, 256, 320 and 384 kbit/s. The table below shows the bit rates allowed for
each type of Layer II mode.
Bit Rate
32K
48K
56K
64K
80K
96K
112K
128K
160K
192K
224K
256K
320K
384K
Note: The bit rate must be ≤ 192 kbit/s if you set the Layer II mode to Mono.
If the encoder is equipped with a Dual Channel Audio (DCA) card, for
optimum audio quality, the Joint Stereo mode is highly recommended for data
rates below 192 kbps. The Stereo mode should be used for data rates of 192 kbps
and above.
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Allowed Modes
Mono
Mono
Mono
All
Mono
All
All
All
All
All
Stereo, Joint, Dual
Stereo, Joint, Dual
Stereo, Joint, Dual
Stereo, Joint, Dual
D9054 HDTV Encoder Intstallation and Operation Guide 5-47