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SDE-6S-ASI
User Manual
ENCODED AUDIO:
Audio Signal Source:
Indicates the audio source program. This can be any one of 16 NTSC audio tracks, 6 SD/SDI
embedded audio sources or 2 HD/SDI embedded audio sources.
Left Channel Track:
This setting only applies to audio embedded in the incoming SD/SDI and HD/SDI streams. Any
one of the embedded audios can be used here.
Right Channel Track:
This setting only applies to audio embedded in the incoming SD/SDI and HD/SDI streams. Any
one of the embedded audios can be used here.
Audio Digitizer Sample Rate:
indicates the input sampling rate of the encoder. The SDE-6S-ASI supports 48 kHz
sampling rate.
Audio Delay (ms):
allows the user to adjust the audio delay (-300 to 300 ms) to correct for input video/audio sync
mismatch.
Dialog Normalization:
behaves as an Audio Automatic Gain Control (AGC) or Dynamic Range Control (DRC). It
has the ability to take different incoming audio levels and normalize them. The ability of the Dialog Normalization
depends on the configuration of the Dynamic Range Control. The SDE-6S-ASI allows you to adjust the normalization
from -1 to -31 dB. The typical value is -27 dB. This is based on the standard film audio formats which normally are
between -25 and -31 dB.
Dolby Config Mode:
also referred to as Channel mode. Indicates the number of main audio channels within the
encoded bitstream and also indicates the channel format. The unit supports 2/0:L,R= audio is a dual channel (Left &
Right).
Dolby Surround Mode: indicates if the audio is two-channel Dolby or not. Possible options are:
Unspecified: indicates the decoder must determine the audio format by itself.
Disabled: indicates the audio is not encoded in surround mode.
Enabled: indicates the audio is encoded in surround mode.
Dolby DRC Line Mode:
allows the user to select the type of Dynamic Range Compression to be applied to signals
that will be used as direct audio feeds into a TV tuner or other receive devices. The factory default value is “None”.
Dolby DRC RF Mode:
allows the user to select the type of Dynamic Range Compression to be applied to signals that
will be used for retransmission on an RF carrier, and then fed into TV tuner or other receive devices at the end of
the line. The factory default value is “None”.
Possible options for and are:
a. None: no dynamic range controls have been assigned.
b. Film Standard:
suitable for movies where the very low-level sounds are not to be amplified due to other
undesirable background noises that may become audible, but rather the peaks and valleys are normalized
instead. It has a null bandwidth of 10 dB (-31 to -21 dB) and can add up to 6 dB of boost for low levels and
attenuate high levels. The setting is used to quiet load shouting and amplifier whispers. See Dolby Encoding
guidelines for additional information.
c. Film Light:
is similar to “Film Standard” but with a null bandwidth of 20 dB (-41 to -21 dB) and can add up
to 6 dB of boost for low levels and attenuate high levels.
d. Music Standard:
suitable for program content that is mainly made up of music where the sound level is
to be normalized (reducing the loudness) to be consistent with other programs. It has a null bandwidth of
10 dB (-31 to-21 dB) and can add up to 12 dB of boost for low levels and attenuate high levels. See Dolby
Encoding guidelines for additional information.
e. Music Light:
similar to “Music Standard” but with a null bandwidth of 20 dB (-41 to -21 dB) and can add
up to 12 dB of boost for low levels and attenuate high levels.
f. Speech:
suitable for program content that is mainly made up of speech only and has a null band width of
10 dB (-31 to -21 dB) for average speech and can add up to 15 dB of boost for low levels and attenuate high
levels. The setting is used to quiet load shouting and amplifier whispers. See Dolby Encoding guidelines for
additional information.
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