added analog anti-aliasing filter
added analog anti-aliasing filter

Change-Id: I1a4bd409080761506f2dcb70f707024d2aba18a2
Reviewed-on: https://robertou.com/gerrit/160
Tested-by: Jenkins CI
Reviewed-by: Robert Ou <6265f2953535a346b7ba7418c552b02d288905ed@pioneers.berkeley.edu>

JaronArmiger/tenshi,abhishyantkhare/tenshi,pioneers/tenshi,abhishyantkhare/tenshi,zentner-kyle/tenshi-old,abhishyantkhare/tenshi,hozhu123/tenshi,chuen0630/tenshi,cduck/tenshi,chuen0630/tenshi,tobinsarah/tenshi,SamboyKirk/tenshi,hozhu123/tenshi,JaronArmiger/tenshi,chuen0630/tenshi,SamboyKirk/tenshi,abhishyantkhare/tenshi,jarzofjam/tenshi,SamboyKirk/tenshi,SamboyKirk/tenshi,tobinsarah/tenshi,jarzofjam/tenshi,zentner-kyle/tenshi-old,pioneers/tenshi,cduck/tenshi,pioneers/tenshi,chuen0630/tenshi,jessicakam/tenshi,jessicakam/tenshi,SamboyKirk/tenshi,jarzofjam/tenshi,pioneers/tenshi,jarzofjam/tenshi,JaronArmiger/tenshi,jarzofjam/tenshi,hozhu123/tenshi,cduck/tenshi,SamboyKirk/tenshi,JaronArmiger/tenshi,cduck/tenshi,jessicakam/tenshi,zentner-kyle/tenshi-old,jarzofjam/tenshi,pioneers/tenshi,jessicakam/tenshi,cduck/tenshi,tobinsarah/tenshi,tobinsarah/tenshi,SamboyKirk/tenshi,hozhu123/tenshi,JaronArmiger/tenshi,abhishyantkhare/tenshi,zentner-kyle/tenshi-old,chuen0630/tenshi,jessicakam/tenshi,tobinsarah/tenshi,hozhu123/tenshi,JaronArmiger/tenshi,jarzofjam/tenshi,tobinsarah/tenshi,chuen0630/tenshi,jessicakam/tenshi,chuen0630/tenshi,zentner-kyle/tenshi-old,cduck/tenshi,zentner-kyle/tenshi-old,abhishyantkhare/tenshi,pioneers/tenshi,jessicakam/tenshi,pioneers/tenshi,tobinsarah/tenshi,hozhu123/tenshi,abhishyantkhare/tenshi,JaronArmiger/tenshi,hozhu123/tenshi,cduck/tenshi