Sirius 800 Series User Manual
4929 Sirius 800 Audio AES/MADI Output with Audio Delay
Output Modules and Rear Panels 11.1
Iss 5 Rev 7
Page 178
© 2017 SAM
11.1.5.1
Audio Delay
Delay is applied to an audio output channel in steps of 0.25 ms:
•
MADI - in a range of 0 to 2 Seconds @ 48 kHz
•
AES - in a range of 0 to 2 Seconds @ 48 kHz
11.1.5.2
Sample Rate Conversion
Sample Rate Conversion (SRC) allows the sample rate of audio from the audio crosspoint to
be converted to a different sample rate and output from the 4929 module. The following
figures show the SRC section of the Workbench audio output processing screens for both
AES and MADI.
SRC Operation
•
The audio outputs use sample rate converted to one of five references:
•
Ref 1 - Derived Reference 1 (Video)
•
Ref 2 - Derived Reference 2 (Video)
•
Ref 3 - Derived Reference 3 (Video)
•
Ref 4 - Derived Reference 4 (Video)
•
Ref 5 - AES Reference input
•
Supported input sample rates from the audio crosspoint: 32 kHz, 44.1 kHz or 48 kHz
•
AES
- Sample rate conversion is applied to groups of eight audio pairs rather than
individual channels. All selected pairs in the group will be synchronous to each other
and output at the same selected sample rate. Deselected pairs will pass through with
their sample rates unchanged.
•
Supports conversion to: 32 kHz, 44.1 kHz or 48 kHz
Figure 115 Example Workbench AES Audio Processing Screen Showing SRC Settings
Figure 116 Example Workbench MADI Audio Processing Screen Showing SRC Settings
Note:
•
When sample rate converting AES to 44.1 kHz the output must be locked to a
44.1 kHz AES reference.
•
When sample rate converting AES to 32 kHz or 48 kHz the output can be locked to
any video reference or to the AES reference (but not an AES reference of
44.1 kHz).
