What is the difference between Standard and Custom AEC References ?
Standard AEC Reference is used for applications in which the microphones are
not being reinforced to the room they occupy. A Custom AEC Reference is used
for applications in which the microphones are being reinforced locally. The
Custom AEC Reference allows us to exclude the microphones reinforcement audio
from the AEC Reference preventing "Self Referencing" which results
in cancelation of the microphone audio to the far end. See the following Tech
Note for setup and configuration of both Standard and Custom AEC References: