5.5.1 Single-Talk Echo Tuning

The parameters Double-Talk Threshold and AES Suppression are responsible for tuning the Single-Talk echo performance. For more details, refer to 4.3 Echo Cancellation. Adjust the parameter of the Double-Talk Threshold from 0x7F to 0x1C. If the value of the AES Suppression is 0x04 and still not able to suppress the echo (audible single-talk echo) effectively, start to fine tune the AES Suppression from 0x01 to 0x0F.

Note: While the selectable value of the Double-Talk Threshold is up to 0x1C, the recommendation is to not use these two values to suppress the echo as they can severely distort the MIC speech.