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In the UK, use of wireless microphone systems requires a Wireless Telegraphy Act license, except for the license free bands of 173.8–175.0 MHz and 863–865 MHz. In 2013 the UK communications regulator, Ofcom, held an auction in which the UHF band from 790 MHz to 862 MHz was sold to be used for mobile broadband services. [23] [24] [25]
When lavalier microphones are concealed under clothing, the clothing often scratches against the microphone. To minimize this problem, sound recordists sometimes wrap the head of the microphones in moleskin or place it inside a hollow-centered, column-shaped sponge and place it under a placard, behind a button, or within the knot of a tie.
The following year, the company introduced "Microport," a wireless microphone system for television production. In 1958 Labor W was renamed Sennheiser electronic. [ 7 ] In 1960, Sennheiser introduced the cardioid successor to its popular MD 21, the MD 421 ; this microphone was also quickly adopted for professional broadcasting applications ...
The Sennheiser MD 421 is a German cardioid dynamic microphone, widely used for speech in broadcasting and for music in live concerts and the recording studio. Introduced in 1960, the internal large-diaphragm transducer element of the MD 421 is still produced unchanged by Sennheiser .
Sennheiser Consumer Business is a consumer electronics manufacturer specializing in audio. Sennheiser had announced that they are looking to sell their consumer business to a willing buyer to focus on the Professional business. It was announced on 7 May 2021 that Sonova would be acquiring the business for an undisclosed amount.
In 1953, Electro-Voice (EV) developed the Variable-D technology to reshape the microphone pickup area into a cardioid directional pattern, using only one transducer element. A major improvement was the elimination of problems with the proximity effect , achieved by directing sound waves to the rear of the transducer element through multiple ...
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