Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 219 Ver. 1.00 – 10/29/2008
4.3.6. $MICANR Ambient Noise Reduction Control
Command Function This command allows the user to configure
the ambient noise reduction settings for the
current voice mode (see $vselect)
Command Functional Enfora Specific
Group
Command Format Query AT$MICANR=?
Response $MICANR: (0-2),(0-1,3),(0-2),(0-20),(0-2)
OK
Write Format AT$MICANR=<control>, <mode> ,<noise
level>,<tone thresh>, <tone count>
Response OK
Read Format AT$MICANR?
Response $MICANR: < control >,< mode >, <noise
level >,< tone thresh >,< tone count >
OK
Execution Format N/A
Response N/A
Parameter Values
< control > 0 => stop.
1 => start.
2 => update.
< mode > 0 => ANR disabled.
1 => ANR and tone detector enabled.
3 => ANR enabled, tone detect disabled
< noise level > 0 => noise attenuation based on incoming
SNR
1 => 6 dB noise attenuation
2 => 12 dB noise attenuation
< tone thresh > 0-20 => 7 = 21dB (recommended).