Polycom SoundStructure C16 Design Manual page 222

4 On the channels page unmute the signal generator and ensure the gain is set to 0 as shown in the
following figure. There are different signals that the signal generator can create, ensure that Pink
Noise is selected.
5 Set the output fader from the SoundStructure device to 0 as shown in the next figure and unmute the
signal generator to the loudspeaker output. Pink noise may be heard in the room depending on the
amplifier volume settings.
6 Adjust the audio amplifier volume knob until the SPL meter, positioned at the listener's ear position,
measures approximately 75dB SPL C-weighted.
Polycom, Inc. 222