Measurement microphones - Part 6: Electrostatic actuators for determination of frequency response

This part of IEC 61094

- gives guidelines for the design of actuators for microphones equipped with electrically conductive diaphragms;

- gives methods for the validation of electrostatic actuators;

- gives a method for determining the electrostatic actuator response of a microphone.

The applications of electrostatic actuators are not fully described within this standard but may include

- a technique for detecting changes in the frequency response of a microphone,

- a technique for determining the environmental influence on the response of a microphone,

- a technique for determining the free field or pressure response of a microphone without specific acoustical test facilities, by the application of predetermined correction values specific to the microphone model and actuator used,

- a technique applicable at high frequencies not typically covered by calibration methods using sound excitation.