We want to use Phone call Handsfree mode with GL865. Someone who will speak from 2 meter distance at outdoor. Which microphone we can use? Is it requeire amplifier and which ?
The Telit Audio Settings Application Note document gives many theoretical and practical suggestion in this matter, including sample calculations having distance as factor; of course the environment noise plays a significant role.
I would suggest to ask for a design review via your Telit representative.
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