Microphones are electromechanical products used to convert sounds into electrical signals. The two most common microphone technologies are MEMS and electret condenser. MEMS microphones are the newest of the two technologies and continue to grow in use thanks to their compact package sizes, improved audio quality, and more stable performance. On the other hand, electret condenser microphones have been a staple of audio recording applications for many years. Their flexible mounting configurations, wide operating voltages, and additional unidirectional and noise-canceling directivity options make them a viable microphone for many applications.