If the device is subject to echo (or doesn't have hardware echo cancellation), then beeps recorded by the microphone will be detected and a measurement of echo delay can be computed.
Echo calibration procedure can be started by calling {@link org.linphone.core.LinphoneCore#startEchoCalibration LinphoneCore.startEchoCalibration}.
The measurement of the echo delay is important to save CPU computations by restricting the temporal area where the software echo canceller has to perform.
If the device is subject to echo (or doesn't have hardware echo cancellation), then beeps recorded by the microphone will be detected and a measurement of echo delay can be computed.
Echo calibration procedure can be started by calling {@link org.linphone.core.LinphoneCore#startEchoCalibration LinphoneCore.startEchoCalibration}.
The measurement of the echo delay is important to save CPU computations by restricting the temporal area where the software echo canceller has to perform.