2 quick questions

Hi everyone,

I’m quite new here and I have 2 quick questions.

1. What does AIC stand for?
I saw this in source code:
AudioInputI2S_F32 i2s_in; //Digital audio from the Tympan AIC.
also I saw:
AudioInputI2S_F32 i2s_in(audio_settings); //Digital audio input from the ADC

I know what ADC is but don’t know AIC.

2. Does the 3.5mm Audio jack for external microphone of Tympan RevD receive 2-channel signals?
I connect the audio jack with Roland CS-10EM earphone which has binaural microphones but only left microphone works.

Roland CS-10EM website:

Thanks in advance for any replies.