POWER CORE User Manual
Version: V6.0.0/5
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8. Audio IO
8.2.2
Setting up Streams
Audio is streamed from POWER CORE to the network according to the RAVENNA audio output settings defined
in the system configuration. This means that once a suitable configuration is loaded to the system, audio will be
streamed automatically whenever POWER CORE is connected to the network and powered.
To prepare some output streams, edit the system configuration as follows:
1
.
Open the "Audio Output" branch of the 'Tree Definition', and select one of the
RAVENNA Out
tabs.
Note that the number of channels available is dependent on the POWER CORE license. At maximum capacity,
up to 256 channels of audio can be broadcast on 128 streams.
Note that streams can be transmitted from either or both
'Tree Definition': Audio Output -> RAVENNA 1-64
2
.
All outputs that have a name entered into the
Name
field will be transmitted automatically as streams,
while the other parameters configure the output's audio options and stream setup.
The first few fields:
Name
,
Type
,
Dig Offset Gain
,
Matrix enable
,
Transparent
and
Default Audio
are handled
in an identical manner to other outputs. See
The RAVENNA parameters:
Stream Size
,
Codec
,
SampPerFrm
,
Devices
,
IP Addresses
,
mDNS
,
SAP
,
TTL
,
etc. define the stream setup.
The important fields are:
·
Name
- a name
must
be entered in order to publish the output stream to the network. The maximum
length is 8 characters. If the stream is to be displayed on another ruby surface in a channel list, then the
stream name must use the format [GroupName]:[SignalName], where each label field is a maximum of 8
characters. See
·
Type
- defines the format of the output: mono, stereo, etc. This should match the
Stream Size
.
·
Matrix enable
- by turning
ON
the
Matrix Enable
option, the output can be controlled by a matrix.
·
Default Audio
- alternatively, if
Matrix Enable
is
OFF
, a permanent audio source can be assigned to
the output. Note that the
Default Audio
setting is ignored when
Matrix Enable
is
ON
.
·
Stream Size
- defines the number of audio channels used by the stream. This should match the audio
output format (
Type
).
·
Codec -
select the type of codec to use for the stream:
Linear
,
16
,
24
or
32
bits; or
AM824
(a
packetized AES signal that includes all user and status bits).
·
SampPerFrm -
sets the number of samples included in each Ethernet Frame. A frame is the payload
being carried over the Ethernet link. This is typically set to 32.
·
Devices -
select which port to send the stream out on:
ra0
,
ra1
or both
ra0 + ra1
(Hitless Merge SMTPE
2022-7).