Electret Condenser Microphone

Testing an electret condenser microphone for acoustic parameters consists of a sound source, test and measurement software and a means for displaying the results.

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Microphones can be classified both according to transducer principle and by directivity or polar pattern.  Transducer principle is the method of converting one form of energy to another. Since we have already covered transducer principle of an electret condenser microphone (ECM) in a previous blog article , we shall focus on types of electret condenser microphones … Continue reading “Types of Electret Condenser Microphones (ECM) by Polar Pattern”

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Key parameters for Electret Condenser Microphone (ECM) There are several key parameters that are used to describe the characteristics of an Electret Condenser Microphone (ECM). Sensitivity: Since a Electret Condenser Microphone is a transducer that converts acoustic energy into electric energy, one of the most important characters is the conversion ratio, i.e. what is the … Continue reading “Key parameters for Electret Condenser Microphones (ECM)”

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Operation of an Electret Condenser Microphone (ECM) As we discussed in our last blog Anatomy of an Electret Condenser Microphone, the basic structure of an Electret Condenser Microphone (ECM) is a pair of parallel plates, one of which is a moveable diaphragm, and another is a fixed back plate. A special layer of material called … Continue reading “Operation of an Electret Condenser Microphone (ECM)”

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Microphones are transducers. Electret Condenser Microphones (ECMs) have both moving and stationary parts. Each part of an Electret Condenser Microphone (ECM) plays a significant role. Simply put microphones are transducers. As a transducer a microphone converts acoustic energy into electric energy. This is quite the opposite of a loudspeaker driver which converts electric energy into acoustic energy. … Continue reading “Anatomy of an Electret Condenser Microphone (ECM)”

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