Cobalt Digital COMPASS 9223 Dual-Channel 3G_HD_SD MPEG-4 Encoder - Manual (Page 30)

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9223-OM (V2.0)
•
Peak Audio Bit Rate: This parameter is only displayed for AAC-LC. It must be set at
least 1 kb/s higher than the Audio Bit Rate. The maximum value is 288 kb/s for Mono,
and 576 kb/s for Stereo and Dual Mono.
•
Sample Rate: This field is for information purposes only. The 9223 only supports 48
kHz audio sample rate.
Basic Tab – Additional Audio Support
If the encoder is in a configuration where additional audio channels can be offered, a checkbox
to enable them will be presented in the GUI, as indicated below:
If the box is checked, additional fields will become available for configuring the additional audio
channel. These fields are the same as with the first audio channel. Note that, depending on the
configuration, the Audio Source selection may be grayed out.
After the first additional audio is enabled, the encoder may offer a second additional audio
channel, as depicted below:
The second additional audio option will be offered in the following conditions:
•
In a single-channel encoder, if the input signal type is SDI.
•
In a dual-channel encoder, if the first additional audio is not being used by the other
encoder channel.
•
In a dual-channel encoder, if secondary audio is enabled (see the next section).