A didgeridoo miked with a small phantom powered condenser microphone that clips onto the instrument.
There are a number of well-developed microphone techniques used for recording musical, film, or voice sources or picking up sounds as part of sound reinforcement systems. The choice of technique depends on a number of factors, including:
The wish to capture or avoid the collection of extraneous noise. This can be a concern, especially in amplified performances, where audio feedback can be a significant problem. Alternatively, it can be a desired outcome, in situations where ambient noise is useful (hall reverberation, audience reactions such as cheering).
Degree of directionality of pickup: in some settings, such as a home video of a birthday party, the person may wish to pick up all the sounds in the room, which would make an omnidirectional mic desirable. However, if a TV news crew is filming a reporter at a noisy protest, they may only wish to pick up her voice, making a cardioid mic more desirable.
Choice of a signal type: Mono, stereo or multi-channel.
Type of sound-source: Acoustic instruments produce a sound very different from amplified electric instruments, which are again different from the human voice.
Sound pressure levels: a mic that is recording Baroque lute will not face high sound pressure levels, which could lead to distortion; on the other hand, a mic being used to record heavy metal drumming or low brass may face extreme sound pressure levels.
Situational circumstances: Sometimes a microphone should not be visible, or having a microphone nearby is not appropriate. In scenes for a movie the microphone may be held above the picture frame, just out of sight. In this way there is always a certain distance between the actor and the microphone.
Processing: If the signal is destined to be heavily processed, or "mixed down", a different type of input may be required.
The use of a windshield as well as a pop shield, designed to reduce vocal plosives.
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is a sound-absorbing disk placed between two microphones to create an acoustic "shadow" from one microphone to the other. The resulting two signals can...
applied to both signal wires in balanced microphone cables, forming a phantom circuit, to operate microphones that contain active electronic circuitry...
transducer in those directions is the central omnidirectional microphone. In practice this can produce less localisation error than either of the alternatives...
also a common technique for production of stereo recordings. See Microphonepractice § M/S technique. M/S encoding does not strictly require that the...
is captured, with any natural reverberation present, by an array of microphones. The signal is then reproduced over multiple loudspeakers to recreate...
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would therefore amplify the sound coming from the Mr. Microphone. Though not the first microphone to broadcast over the radio, it was by far the most popular...
expanding playback channels to a larger number of loudspeaker channels Microphonepractice, in which matrixing may be used to produce a mono-compatible stereo...
wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique...
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consumer and professional audio-electronics manufacturer of microphones, wireless microphone systems, phonograph cartridges, discussion systems, mixers...
are used for the mono headphone signal and two pins for the unbalanced microphone signal.[citation needed] Another common use is for DC power connections...
into the musician's mouth by means of a plastic tube adjacent to a vocal microphone. The musician controls the modification of the instrument's sound by changing...
mixing, gain before feedback (GBF) is a practical measure of how much a microphone can be amplified in a sound reinforcement system before causing audio...
public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent...
calibrate measurement microphones. This service is offered by some microphone manufacturers and by independent testing laboratories. Microphone calibration by...
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