Polycom C16 - Manual (Page 196)

Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12
7 - 20
be performed by adjusting the level of the fader on the “Amplifier” channel
within the SoundStructure device. Chapter 9 provides examples of using the
“Amplifier” channel for volume control.
Presets
Once any settings of the SoundStructure system have been adjusted, it is
important to save the settings to a full preset to ensure the settings survive a
power cycle.
There are two types of presets supported within SoundStructure systems - full
presets and partial presets. All presets are stored as part of the SoundStructure
configuration file.
Full Presets
Full presets store all the audio parameters of the virtual channels including
input and output gains, signal processing options, matrix cross point settings,
automixer settings, and all other signal-related settings that are different from
the default values for these parameters.
SoundStructure presets do not store device-level information such as the
RS-232 rate, Ethernet address, virtual channel definitions, virtual channel
group definitions, or logic pin definitions. These settings are defined in a sep-
arate section of the configuration file and can not be changed as part of preset
execution.
When full presets are executed there are two distinct events that happen. First
the default values for all parameters are restored and then the full preset is
restored. The analog outputs of the system are muted during the time it takes
to execute the full preset.
Partial Presets
Partial presets store only the settings that a user places into the partial preset.
Partial presets are designed for use with volume control applications and
muting multiple signals and any other applications where it is necessary to run
multiple commands with a single API command. Any parameter within
SoundStructure may be adjusted with a partial preset. Partial presets are sim-
ilar to the concept of macros in the Polycom Vortex products.
When partial presets are executed, the commands in the partial presets are
executed sequentially with the first command listed executing first.
The analog outputs of the SoundStructure system are muted during the time it
takes to execute a full preset.