1876, American emile berliner invented the first telephone microphone in Bell Laboratories. At that time, Bell and other scientists were working hard to find a better way to pick up the phone, which was the latest invention at that time. During this period, they invented the liquid microphone and the carbon particle microphone. These microphones are not ideal, but they can barely work.
Edison and Berlin both applied for the patent of carbon microphone in 1877.
1949, Weinberg Laboratory (predecessor of Sennheiser) developed MD4 microphone, which can effectively suppress sound feedback and reduce background noise in noisy environment. This is the world's first noise-reducing microphone that suppresses feedback.
196 1 year, at the Hannover Messe in Germany, Sennheiser introduced MK 102 and MK 103 microphones. These two microphones explain a brand-new microphone manufacturing concept-RF RF capacitor, which adopts a small and thin diaphragm, has the characteristics of small volume and light weight, and can ensure excellent sound quality. In addition, this microphone is very sensitive to electromagnetic interference. They have a strong anti-interference effect on the climate.