Cobalt Co9992-4ENC-4K-HEVC Software-Defined Broadcast Encoder - Manual (Page 70)

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
Sample Size: Select between 16-bit, 20-bit and 24-bit. The sample size defines the
elementary stream audio bit rate, as follows:
Sample Size Audio Bit Rate
16-bit 1,920 kb/s
20-bit 2,304 kb/s
24-bit 2,688 kb/s
Audio Configuration Basic Tab – Dolby Pass-through
Dolby Pass-through is a mode where audio comes pre-encoded in the SDI signal, and is simply
passed on to the transport stream without any processing from the 9992-ENC, except for
transport packetization. Dolby Pass-through does not have any additional parameters in the
Basic tab. The 9992-ENC supports pass-through of the following signal types:

Dolby AC-3

Dolby EAC-3

Dolby E
Audio Configuration Advanced Tab
The appearance of the audio configuration advanced tab is a function of the encoding standard,
but some parts of it are common to all standards.
Audio Configuration Advanced Tab – Common Parameters
The common parameters are shown below.

Audio Delay (ms): Use this to compensate for up to ±200 milliseconds of audio delay in
the input signal. This setting will advance or delay the audio in relation to the video by
the amount configured.

Audio Gain L/R (dB): This control allows an independent gain adjustment for the left
and right audio channels, from -18.0 dB to +18.0 dB, in steps of 0.5 dB. If this audio
encoder channel is configured for 5.1 Surround operation, additional gain controls
become available: