Patent ID: 11863710
Assignee: MEDIATEK INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 2:
3. The audio device as claimed in claim 2, wherein in response to the processing circuitry determining that a signal level of the microphone is lower than or equal to a threshold, the processing circuitry determines that the microphone is muted,
wherein in response to the processing circuitry determining that the signal level of the microphone is higher than the threshold, the processing circuitry determines a second status of the microphone is that the microphone is working normally, sends a second status signal indicating the second status of the microphone to the far end through the cloud network, obtains the filter coefficients from the AEC adaptive filter, and calculates similarity between the obtained filter coefficients and the reference filter coefficients.