Platinum™ IP3
Installation and Operation Manual
Frame Synchronizer and Demultiplexing Input Modules (PT-FSDMX-IBG/PT-FSDMXO-IBG, PT-FSDX8C1D-IBG, PT-FSDMX8O1D-IBG)
© 2016 Imagine Communications Corp.
Proprietary and Confidential.
September 2016 | Page 147
Audio Processing Features
The following audio functionality is supported per SDI channel
De-embedding 4 groups (16 mono channels) of Audio prior to the Frame/Audio Synchronizer
Embedding 4 groups (16 mono channels) of Audio after the Frame/Audio Synchronizer.
Sample Rate Conversion (with bypass capability on a per stereo-pair basis). See Sample Rate
Conversion (on page 148)
Audio Synchronizer
Audio Delay (up to 3000ms / mono channel)
Audio Proc (Gain, Mute, Invert)
Audio Sum (on a per mono-channel basis, but based on a pre-defined list of Sums)
Audio Swap (on a per mono-channel basis, but based on a pre-defined list of Swaps)
Audio Test Tone Generator (Off, 400Hz, 2kHz, 4kHz)
Quiet Audio Transitions when two sources of same data- and frame-rate are switched upstream. See
Quiet Audio Transitions (on page 148)
Audio Processing Notes and Restrictions
De-embedding
: For De-embedding, audio must be embedded synchronously at a sample rate of
48kHz.
Embedded Dolby-E frames
must be properly aligned with the Video frame in order to be transferred
from the Frame Synchronizer’s input clock domain into the output clock domain. Proper alignment
(position of guard-band) is important since Dolby-E frames can be dropped or repeated alongside
the active video content.
Embedded Audio
: All embedded Audio is embedded synchronously at a sample rate of 48kHz
TDMed Audio data
(all 128 mono channels) will have a sample rate of 48kHz and will be in the same
Audio clock domain, locked to the applied Video Reference
SMPTE 372M (Dual link):
Only the 16 audio channels de-embedded from Link A will be processed,
re-embedded into the Link A of the outgoing SDI stream and sent via TDM to the ATDM Crosspoint
for further routing.
Also see Word Length (on page 157), ADS Clean (on page 156), and Group Active Channels (on page
157)
Audio Order of Operations
1.
Insert Tone (if enabled)
2.
Polarity Reversal and Level Adjust
3.
Sum
4.
Swap/Copy
5.
Mute (if enabled)
