Pcm Distribution System; Aero.one Within A Typical Ac-3 Distribution System (Fox, Pbs) - Linear Acoustic AERO.one V3 User Manual

Linear Acoustic AERO.one V3 User Guide
Existing Local TV
Plant
Upconverter
HD/SD-SDI
Figure 3-2 AERO.one within a typical AC-3 distribution system (FOX, PBS)
3.2

PCM Distribution System

Figure 3-2 shows how an AERO.one would be installed in a typical PCM distribution sys-
tem. Note that audio coding will very likely be part of the satellite distribution gear. In the
case of NBC, MPEG 1 Layer 2 is built in to the satellite encoder at the network side, and
into the IRD (Integrated Receiver Decoder) units at each affiliate station. The system ac-
cepts PCM prior to distribution and produces PCM after reception, so it is considered a
PCM distribution system.
Note that metadata is carried via the Data B channel of the IRD in the case of NBC. It is
standard audio metadata and can be applied to the AERO.one directly as shown.
Tally
Audio
1/2 3/4 5/6
5.1 Channel PCM
Dolby Digital (AC-3)
ATSC Encoder
14
Network Feed
EAS/AUX
AERO.one (DTV) with
Dolby Digital (AC-3) Encode Option
LtRt or LoRo
Stereo Out
(via AES)
ASI
Transport Stream
Applications
Network IRD
ASI
Transport Stream
GPI
Transport Stream
Splicer
STL
Transmitter