RODE NTG2 SHORT SHOTGUN MICROPHONE

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With a DC-biased condenser microphone, the plates are biased with a fixed charge ( Q). The voltage maintained across the capacitor plates changes with the vibrations in the air, according to the capacitance equation (C = Q⁄ V), where Q = charge in coulombs, C = capacitance in farads and V = potential difference in volts. A nearly constant charge is maintained on the capacitor. As the capacitance changes, the charge across the capacitor does change very slightly, but at audible frequencies it is sensibly constant. The capacitance of the capsule (around 5 to 100 pF) and the value of the bias resistor (100 MΩ to tens of GΩ) form a filter that is high-pass for the audio signal, and low-pass for the bias voltage. Note that the time constant of an RC circuit equals the product of the resistance and capacitance. The frequency response of a microphone is important because it affects the sound of the recording. A microphone with a flat frequency response reproduce all frequencies equally well. This produces a natural sound. In contrast, a microphone with a shaped frequency response will boost or attenuate certain frequencies. This can be better for specific situations. However, this is actually a pretty crude solution because the actual amount of cancellation depends on the wavelength of the sound, its angle of incidence, the length of the tube, and the slot spacing. Most standard-length shotgun tubes don't have much effect below about 2kHz, and are no more directional than the basic supercardioid capsule design they employ below that frequency. While very long rifle mics do exist and are directional to lower frequencies, (for example, the Sennheiser MKH816), they are unwieldy to use and the longer tube necessarily moves the capsule even further away from the sound source, negating to some extent the enhanced directional benefits.

Also in 1923, the ribbon microphone was introduced, another electromagnetic type, believed to have been developed by Harry F. Olson, who applied the concept used in a ribbon speaker to making a microphone. [17] Over the years these microphones were developed by several companies, most notably RCA that made large advancements in pattern control, to give the microphone directionality. With television and film technology booming there was a demand for high-fidelity microphones and greater directionality. Electro-Voice responded with their Academy Award-winning shotgun microphone in 1963. [18] A little bulkier and heavier than the Rode VideoMic Go is Rode's VideoMic Pro. This hotshoe shotgun mic shares a similar size and design, but adds extra features for those seeking more flexibility and higher quality recordings. With every reputable—and less than reputable—microphone manufacturer producing them, it’s sometimes hard to figure out which shotgun mics deliver on their promise of great sound. So to help you out, we’ve rounded up a list of tips, advice, and the best shotgun mics.The 10″ long MKE 600 uses an interference tube and a super-cardioid/lobar polar pattern to provide noticeable directivity on-axis along with significant attenuation of sound entering at the sides and rear. The DPA 4097 has IP58 certification, which means it is protected from dust ingress and immersion in liquids. This is achieved with a water-repellant nano-coating of the cover and housing. The microphone also has hermetic sealing of the amplifier at the core of the mic and dual gold plating of the diaphragm. Despite its diminutive size, the DPA 4097 is a professional microphone capable of delivering the high-quality audio needed for film and television. Shotgun mics come in various lengths, from a compact 3 inches or 4 inches to more than one-foot long. Consider how you’ll use the mic when deciding whether you want a compact one. If you’re mounting it on a camera, a smaller profile makes the mic lighter and much more maneuverable. Longer shotguns tend to have tighter polar patterns; they’re great when recording concerts or sporting events, and you want to minimize the overwhelming crowd noise. But put one on a camera, and you’re liable to poke someone’s eye out! Power Neumann makes some of the best microphones, and the KMR 81 i is no exception. It has a steep price tag, but you get a lot for that high price. It is a super-cardioid mic and uses a pressure gradient transducer and an interference tube depending on the wavelength of the frequency for versatile use.

Institute BV Amsterdam, SAE. "Microphones". Practical Creative Media Education . Retrieved March 7, 2014.

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It uses an interference tube and a super-cardioid polar pattern for focused on-axis directionality while attenuating rear-entry sound and rejecting sound at the sides. Dynamic [ edit ] Patti Smith singing into a Shure SM58 (dynamic cardioid type) microphone Inner workings of a dynamic microphone

In 1856, Italian inventor Antonio Meucci developed a dynamic microphone based on the generation of electric current by moving a coil of wire to various depths in a magnetic field. This method of modulation was also the most enduring method for the technology of the telephone as well. Speaking of his device, Meucci wrote in 1857, "It consists of a vibrating diaphragm and an electrified magnet with a spiral wire that wraps around it. The vibrating diaphragm alters the current of the magnet. These alterations of current, transmitted to the other end of the wire, create analogous vibrations of the receiving diaphragm and reproduce the word." [4] The Audio-Technica AT8035 is a long shotgun microphone, measuring over 14.5 inches (369 mm) in length. In simple terms, the extra length of the interference tube means that the AT8035 will reject more off-axis sounds and be more directionally focused. You can also get good audio when further from your subject with a long shotgun microphone than one with a shorter tube. Various standard techniques are used with microphones used in sound reinforcement at live performances, or for recording in a studio or on a motion picture set. By suitable arrangement of one or more microphones, desirable features of the sound to be collected can be kept, while rejecting unwanted sounds. USB allows direct connection to PCs. Electronics in these microphones powered over the USB connection performs preamplification and ADC before the digital audio data is transferred via the USB interface.Van Rhijn, Arie. "Integrated Circuits for High Performance Electret Microphones". National Semiconductor. Archived from the original on August 19, 2010. The original Azden SMX-30 had an innovative design that incorporated a switchable mono shotgun and stereo microphones into one body. The SMX-30V improves on this by adding a mixing dial. This means you can choose between a 100-percent mono input, a 100-percent stereo input or any blend of the two microphone signals.