| 摘要 |
The invention relates to a procedure for manufacture of an electret microphone comprising a fixed electrode and a movable electrode, the movable electrode comprising a first plastic film which is metallized and a second plastic film which is electro-statically polarized. According to the invention, there are a first processing stage in which the first and second plastic films are metallized and polarized respectively and a second processing stage in which the metallized plastic film, the polarized plastic film and the fixed electrode are assembled together. |
