How To Modify Volume; At+Qmic - Quectel GSM Series Audio Design Manual

Reference
Parameter
<n> 0
1
2

3.1.2. How to Modify Volume

3.1.2.1. AT+QMIC

AT+QMIC is used to modify the analog gain of microphone. It can increase or reduce the gain of
microphone.
AT+QMIC a
Test Command
AT+QMIC=?
Read Command
AT+QMIC?
Write Command
AT+QMIC=<channel>,<gain-level>
Reference
Parameter
<channel> 0
1
2
GSM Module Audo Design Guide
Normal audio channel (default)
Headset audio channel
Loudspeaker audio channel
Response
+QMIC: (list of supported <channel>s）, (list of supported
<gain-level>s)
OK
Response
+QMIC:
<gainlevel(Normal_Mic)>,<gainlevel(Headset_Mic)>,<gai
nlevel(Loudspeaker_Mic)>
OK
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Normal microphone
Headset microphone
Loudspeaker microphone
GSM Module Audio Design Guide
Confidential/Release
GSM/GPRS Modules
28 / 35