Cobalt Co9992-4ENC-4K-HEVC Software-Defined Broadcast Encoder - Manual (Page 73)

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If the channel is configured for 5.1 Surround operation, the following additional parameters
become available:

LFE Channel: This control allows for the LFE channel to be disabled.

Dolby Surround EX Mode: Select from drop-down menu; options are Not Indicated,
Dolby Surround EX Disabled, or Dolby Surround EX Enabled .

LFE Low Pass Filter: Select the check box to enable the LFE low-pass filter.

Surround 90-deg Phase Shift: Select check box to enable a 90-degree phase shift in the
surround channels.

Surround 3dB Attenuation: Select check box to enable 3dB attenuation in the surround
channels.

Downmix Preference: Select from drop-down menu; options are Not Indicated , Pro
Logic , and Stereo .

Lo/Ro Center Mix Level: Enter the value of the left only/right only down-mix from a
multi-channel to a two-channel output that is compatible for stereo or mono reproduction.

Lt/Rt Center Mix Level: Enter the value of the left total/right total down-mix from a
multi-channel to a two-channel output that is compatible for stereo or mono reproduction.

Lo/Ro Surround Mix Level: Enter the value of the left only/right only down-mix from a
multi-channel to a two-channel output that is Dolby Surround compatible.

Lt/Rt Surround Mix Level: Enter the value of the left total/right total down-mix from a
multi-channel to a two-channel output that is Dolby Surround compatible.
Audio Configuration Advanced Tab – SMPTE-302M LPCM
SMPTE-302M LPCM only includes the parameters indicated in Audio Configuration Advanced
Tab – Common Parameters.