Polycom SoundStructure C16 Design Manual page 217

Setting Amplifier Levels
It is important to set the proper level of the audio amplifier in the room. This
can be done with the following steps using the SoundStructure noise generator
and an SPL meter. If there are no SPL meters than can be used, the ears of the
local participants can be used to help set a comfortable level in the room.
1. If there isn't already a signal generator as part of the project, add a signal
generator to the project by selecting Edit Channels and select the Signal
Generator as shown in the following figure.
Installing SoundStructure Devices
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