Lip Sync; Supported Audio Specifications; Supported Audio Bit-Rates - Ericsson RX1290 Reference Manual

Technical Specification
•
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 ±5 ms.
The lip sync delay between stereo pair 1 and 2 is ±2 ms because the PTS will be
presented independently for each pair.
When using frame sync the lip sync error is up to 40 ms due to audio frame skip and
repeats.
B.3.5

Supported Audio Specifications

Table B.8 Supported Audio Specifications
Specification
ISO/IEC 13818-3
ATSC A-52
SMPTE 302M
B.3.6

Supported Audio Bit-rates

Table B.9 Supported Audio Data Bit-rates (MPEG-2)
Mono kbps
32
48
56
64
80
96
B-10
RIGHT TO BOTH (Channel 2 on left and right)
Description
Generic Coding of Moving Pictures and Associated Information:
(MPEG-2) Audio.
Digital Audio Compression Standard (Dolby Digital).
Linear Audio (Ericsson's interpretation of the specification).
Stereo kbps
64
96
112
128
160
192
EN/LZT 790 0003/2 R1A