The main function of two microphones:
One is used to maintain stable calls and the other is used to eliminate noise during calls. This is the dual-mic noise reduction.
The principle of dual-mic noise reduction is that the microphone (main microphone) at the bottom of the phone is responsible for collecting the sound of your speech, and the microphone (secondary microphone) at the top of the phone is responsible for collecting the noise around the call environment. Finally after processing the human voice collected by these two microphones, will automatically generate sound waves opposite to the noise, so as to achieve the purpose of noise reduction.
Key Differences:
Role: The main microphone is the primary audio input device, while the auxiliary microphone provides additional or secondary audio input.
Usage Scenario: The main microphone is used for capturing the primary audio source, whereas the auxiliary microphone is employed for supplementary purposes.
Focus: The main microphone focuses on the primary sound source, while the auxiliary microphone may capture surrounding or specific sounds to enhance the overall audio experience.