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If you encounter a squealing sound when you are using the two-way talk feature, please kindly note that the squealing sound you hear is very likely a result of the audio feedback loop between the microphone of the camera and the speaker of your mobile phone, a normal acoustic phenomenon that occurs when a microphone picks up sound from a speaker while that speaker is playing sound from the microphone, thus creating a loop.
To avoid this, please ensure when you use two-way audio:
- there are no interfering objects around the camera such as metal objects, electrical appliances, electronic equipment, etc.
- there is no microphone or other radio equipment near the camera.
- your mobile phone is NOT too close to your EZVIZ device.
Otherwise, the audio feedback loop will create a high-pitched squealing sound.
