GSM/GPRS Modules
GSM Module Audio Design Guide
GSM Module Audo Design Guide Confidential/Release
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3.1.3. Echo Algorithm
AT+QAPS is used to modify echo algorithm parameters of all three software audio channels.
Parameters
：
AT+QAPS
Set Command
AT+QAPS=<mode>,<type>,<channel>
,<setting>
Response
+QAPS: <op>,<para1>[,<para2>[,<para3>]][,<setting>]
OK
Set Command
AT+QAPS=<op>,<para1>[,<para2>[,<
para3>]][,<setting>]
Response
If <op> is read,
+QAPS:<result list>
OK
If <op> is write,
OK
If format is error, response
+CME ERROR: <err>
<op>
Operation
0
Get old value
1
Set new value
<para1>
Type of parameters
0
Input FIR Coeffs
1
Output FIR Coeffs
2
FIR output Index
3
Speech Common Para
4
Speech Mode Para
<para2>
Group/mode of parameters
When para1=0/1/4, para2 is a must.
Ranges from 0~2, corresponding to the audio mode.
0
Normal mode
1
Headset mode
2
Loudspeaker mode
See detailed information in notes below.
<para3>
Batch number of parameters.
Quectel
Confidential
