Grass Valley Maestro Master Control v.1.7 - Manual (Page 143)

Maestro Channel Branding User Guide 139
3rd Step: Audio Sets
Note Maestro rate converters are only available on the AES/EBU inputs. They will
not function for embedded audio signals or the MADI inputs. Embedded
signals by definition (and by industry standard) must be synchronous.
The Grass Valley Sonata AES to MADI converters include rate converters.
A wide range of sample rates may be fed into the Sonata AES inputs and
they will be converted to 48 KHz on the MADI output. The Sonata AES to
MADI converters also provide access to all 16 audio channels of the Pro-
cessor. The Sonata sample rate converters are bypassed only when config-
ured to be bypassed or when a Dolby-E signal is present on the input.
Yes mode
This mode turns on the sample rate converters full-time. In this mode there
is no auto detection. Non-audio signals such as Dolby E or AC-3 will NOT
pass through the AES/EBU inputs. This mode is useful when only audio
signals are used, as all AES/EBU signals will be synchronized regardless of
whether they are synchronous with reference or running at the same
sample rate.
No mode
This mode bypasses the sample rate converters full-time providing a full
24- bit-accurate path into the Maestro Processor. This mode can be used for
both audio and non-audio signals as long as all signals are synchronous
with the reference applied to the Maestro Processor.
Auto mode
This mode provides full-time sample rate conversion for all AES/EBU
input signals unless they are marked as non-audio signals, such as Dolby E
or AC-3. When non-audio signals are present, the Maestro processor auto-
matically bypasses the sample rate converters and passes the non-audio
signals bit-accurate. This is the default mode and will be the easiest to use
for most users.
Note All non-audio signals are required to be synchronous with the reference
applied to the Maestro processor as they do not pass through the sample-
rate converters.
Embedded Audio Options
Choices are:
• Embed (default)
• Pass Through
This menu choice allows the user to decide whether to embed the audio
processed in the Maestro Processor or just pass through the embedded
audio that comes in with the video sources. Most users will prefer to re-
embed the audio created in the Processor as otherwise the fading/mixing/
gain control functions of Maestro will not appear on the video outputs.