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4.9.2DACFilters
4.9.2.1De-emphasisFilters
4.9.2.2DACDigitalEffectsFilter
TLV320AIC3007EVMSoftware
www.ti.com
Figure17.DACFilters
Thede-emphasisfiltersusedintheTLV320AIC3007canbeprogrammedasdescribedinthe
TLV320AIC3007datasheet,usingthistab(Figure18).Enterthecoefficientsforthede-emphasisfilter
responsedesired.Whileonthistab,thede-emphasisresponseisshownontheEffectFilterResponse
graph;however,notethatthisresponseisnotincludedingraphsofothereffectresponseswhenonother
filterdesigntabs.
Figure18.De-emphasisFilters
Thedigitalaudioinputstreamcanberoutedthroughthedigitaleffectsfilterinthecodecbeforeroutingto
theDACtoallowcustomaudioperformance.ThedigitaleffectsfiltercannotoperateonboththeADCor
DACatthesametime.ThedigitaleffectsfilteroperationisdiscussedinSection4.9.3
TLV320AIC3007EVM-K22SLAU286–June2009
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