At+Qeec Set Echo Cancellation Parameters - Quectel EC25 Command Manual

4. 8-bit a-law and 8-bit u-law data formats are not supported.
5. Bit per frame=<clock>/<sample>. For example, if <clock> is 2048K and <sample> is 8K, then bit
per frame is 256. Bit per frame should be greater than 16.
6. When slave mode is selected, master and synchronization clock should be provided for the module.
7. When a recommended codec is selected and 16K sampling rate is desired, please input <sample>.
Currently only ALC5616 supports 16K (AT+QDAI=3,0,0,5,0,1,1,1).
Example
AT+QDAI=?
+QDAI: (1-3,5),(0,1),(0,1),(0-5),(0-2),(0,1),(1),(1-16)
OK
AT+QDAI?
+QDAI: 3,0,0,4,0,0,1,1
OK
AT+QDAI=1,1,0,4,0,0,1,1
OK

12.8. AT+QEEC Set Echo Cancellation Parameters

The command is used to set echo cancellation parameters.
AT+QEEC Set Echo Cancellation Parameters
Test Command
AT+QEEC=?
Read Command
AT+QEEC?
Write Command
AT+QEEC=<index>,<value>
EC25&EC21_AT_Commands_Manual
//Query the range.
//Query the current interface configuration.
//Set AUX PCM interface to slave, short-synchronization, 8K sample and
2048K BCLK.
Response
+QEEC: (0-49),(0-65535)
OK
Response
+QEEC: <index>,<value>
......
+QEEC: <index>,<value>
OK
Response
OK
ERROR
LTE Module Series
EC25&EC21 AT Commands Manual
195 / 231