Polycom EagleEye Director - Page 9

9 

Figure 14 - The audio matrix after the new ToLocalRoom group has been added to the project.
Aspartofensuringthevolumecontroladjustsboth theAmplifierandEagleEyeoutputs,theuserminandmaxfader
settingsontheToLocalRoomgroupwillbesettomatchtheminandmaxfadersettingsontheAmplifierchannel.The
reasonforsettingtheuserminandmaxfadervalues
isthatanytimeaSoundStructuresystemisdesignedwithanHDX
codec,bydefaulttheAmplifierfaderminandmaxvaluesareautomaticallysetto‐31and20dBrespectivelyasshownin
theleftsideofFigure15.Theuserminandmaxvaluesaresettoallowthe
audiotobeadjustedbytheHDXcodecover
arangeof0and51andhavethatvolumerangemapdirectlyintotheAmplifierfadervaluesof‐31to+20dB.Thismeans
thatwhentheHDXvolumeissetto0,thefaderontheAmplifierwillbesetto
‐31dBandwhentheHDXvolumeissetto
51,thefaderontheAmplifierchannelwillbesetto+20dB.
Becausewe’vedefinedthegroupToLocalRoom,we’llsetthegrou puserminfadervalueto‐31dBasshownintheright
sideofFigure15.Theusermaxvalue
defaultsto+20dB,sonochangeisrequir ed.Changingtheuserminfadervalueof
theToLocalRoomchannelgroupwillautomaticallyadjusttheuserminfadervalueofallchannelsinthegroup.Inthis
casetheuserminfadervalueoftheEagleEyeoutputissetto‐31dB.