What is the difference between dual microphones and single microphones for hearing aids?

What is the difference between dual microphones and single microphones for hearing aids?

The dual microphone is mainly to realize the directional microphone function of the hearing aid.

With a single microphone, the sound collection is omnidirectional, but the sensitivity of the sound collected in all directions of 360 degrees is the same.

When a patient wearing a hearing aid communicates with other people face to face, the directional microphone can mainly collect the sound from the front, the sound from the rear is not collected, and the sound from the side is weakened. This can improve the user's speech recognition in a noisy environment.

When we communicate, the ambient noise may not always come from the rear. At this time, we need more advanced microphone technology, adaptive microphone.

Directional microphones and adaptive microphones can improve the speech recognition rate in noisy environments, but both require two microphones on the hearing aid.

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