| Popis: |
MEMS microphones are increasingly used in systems exposed to open atmospheres. Therefore, it is important to test the durability of these microphones. Two groups of microphones were used, one with a fast-aging process in a controlled environment chamber and by leaving microphones exposed to the outside environment of a busy street. Their basic acoustic characteristics, especially sensitivity, were compared to new microphones. It was found that treated microphones show negligible loss of sensitivity relative to new microphones, proving their suitability for use in open, non-controlled atmospheres. |
