James E. West and Gerhard M. Sessler did together.
The electret microphone is based on the electret capacitor, which is a special capacitor with quasi-permanent charge. Vibrations in the air are picked up by the capacitor, which generates an equivalent vibrating electrical signal. Unlike a traditional condensor (another name for capacitor) microphone, the electret does not require a power source.
One can purchase a Sony ECM DS70P Electret Condenser stereo microphone from the Sony store for $74.99. However, one can try to get microphone for a cheaper price on Amazon or eBay.
yes, it transduces sound waves to voltage variations
Energizer EPX76
The inventor of the —foil electret microphone with Gerhard Sessler in 1964 in the Bell Lab.
my mom
In 1877, German immigrant, Emile Berliner invented the microphone.
retyu
David Edward Hughes invented the carbon microphone. He lived from 1831-1900, and lived in London, England.
1659
E.C. Went