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A ribbon microphone, also known as a ribbon velocity microphone, is a type of microphone that uses a thin aluminum, duraluminum or nanofilm of electrically conductive ribbon placed between the poles of a magnet to produce a voltage by electromagnetic induction. Ribbon microphones are typically bidirectional, meaning that they pick up sounds ...
Ribbon microphones use a thin, usually corrugated metal ribbon suspended in a magnetic field. The ribbon is electrically connected to the microphone's output, and its vibration within the magnetic field generates the electrical signal. Ribbon microphones are similar to moving coil microphones in the sense that both produce sound by means of ...
Pages in category "Ribbon microphones" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. ...
RCA Type 44-BX ribbon microphone from 1940 used by CBS. Dr. Harry F. Olson began working for RCA Laboratories, where he developed ribbon microphones, first with field coils and then with permanent magnets, resulting in the first ribbon microphones with bi-directional pickup pattern, the RCA Photophone PB-17 and PB-31, introduced in 1931.
Ribbon microphones are still in demand today and come in many styles. In June 1948, the Neumann U 47 was introduced, and distributed by Telefunken . The U47 was the first condenser microphone switchable between cardioid and omni-directional pick-up patterns.
The T-17 Battle Announce Microphone was the most widely used microphone in the U.S. Army and Air Force during World War II, and featured a plastic case that conserved aluminum and lighter and more reliable in a wide range of temperatures and climates. A waterproof version was used on nearly all U.S. Navy ships.
Audio engineers experienced with the 77-DX can position the microphone at different angles to modify its frequency response. For example, with the microphone suspended, tilting it on the horizontal axis will cause the ribbon to sag slightly, resulting in a noticeable boost in the lower-midrange frequencies. [6]
Both ribbon and condenser microphones can be used for Blumlein-pair recording. A few types of stereo ribbon microphones (B & O, [1] Royer, [2] AEA [3]) have even been purpose-built for just this type of recording. Several types of stereo condenser microphones (Neumann, AKG, Schoeps, Nevaton BPT) have also offered a Blumlein arrangement as one ...