Annex B

B.3.3

Audio Routing

The RX8000 Receiver supports the following routing of audio signals:

STEREO (Channel 1 left, Channel 2 right)

MIXED TO BOTH (Channel 1 and 2 on left and right)

LEFT TO BOTH (Channel 1 on left and right)

RIGHT TO BOTH (Channel 2 on left and right)

When the input signal is STEREO, the Audio digital output format will always be

STEREO.

Where a dual mono service is available, it is possible to configure the output as MIXED TO BOTH, LEFT TO BOTH and RIGHT TO BOTH.

B.3.4

Lip Sync

 

The audio at the output remains synchronous to the decoded video by default (i.e.

 

where both video and audio streams are available from the same service). In such

 

circumstances the video and audio streams share the same PCR.

 

The lip sync error (delay from presentation of video until presentation of audio)

 

introduced by the Receiver is in the range of ±2 ms.

 

The lip sync delay between different stereo pairs is ±2 ms because the PTS will be

 

presented independently for each pair.

B.3.5

Supported Audio Specifications

 

Table B.9 Supported Audio Specifications

 

 

 

 

Specification

Description

 

 

 

 

ISO/IEC 13818

Generic Coding of Moving Pictures and Associated Information:

 

 

(MPEG-2) Audio.

 

 

 

 

ATSC A-52

Digital Audio Compression Standard (Dolby Digital).

 

 

 

B.3.6

Supported Audio Bit Rates

 

Table B.10 Supported Audio Data Bit Rates (MPEG-2)

 

 

 

 

 

Mono kbps

Stereo kbps

 

 

 

 

 

 

32

64

 

 

 

 

 

 

48

96

 

 

 

 

 

 

56

112

 

 

 

 

 

 

64

128

 

 

 

 

 

B-10

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