BS EN 61094-6:2005

What is BS EN 61094-6 - Frequency response of microphones about? 

BS EN 61094-6 is an international standard that discusses the electrostatic actuators for determining the frequency response. 

BS EN 61094-6: 

• 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 BS EN 61094-6 but 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 

Who is BS EN 61094-6 - Frequency response of microphones for?  

BS EN 61094-6 on frequency response of microphones is relevant to: 

• Manufacturers of measurement microphones 
• Manufacturers and designers of electrostatic actuators 
• Electrical engineers 
• Electricians 
• Mechanical engineers 
• Testing authorities  
• Testing laboratories 

Why should you use BS EN 61094-6 - Frequency response of microphones? 

An electrostatic actuator is a device for the determination of microphone frequency response comprising an electrically conductive stiff plate placed near the microphone diaphragm such that a time-varying voltage, applied between the plate and the diaphragm, produces an electrostatic force that simulates a sound pressure uniformly distributed over the surface of the diaphragm.  

BS EN 61094-6 discusses terms and definitions that depict a user-friendly idea of the frequency response of microphones. BS EN 61094-6 also provides users with measurement of electrostatic actuator response which contributes to their performance characteristics ensuring their reliability. BS EN 61094-6 describe practical consequences for the determination of the environmental characteristics of a microphone.  

Overall, BS EN 61094-6 is useful as it provides guidance on the electrostatic actuators for determining the frequency response which can be beneficial for your business.