A shotgun microphone has a lobar polar/pick up pattern (an extension of the supercardioid or hypercardioid polar patterns). Interference tubes are placed in front of the diaphragm to achieve extreme directionality. These unidirectional mics generally have small side and rear lobes of sensitivity.
What is the polar pattern of a microphone?
Polar patterns refer to the sensitivity of any given microphone to sounds arriving from different angles, to its central axis. As we can see, the shape of the polar pattern touches the outermost circle at zero degrees, falling below -5 dB at the 90 and 270 decibel points.
What is shotgun polar pattern?
The result is a narrow, highly directional lobe of sound pickup at the front of the microphone. Shotgun polar patterns, characterized by such lobes, are thus called “lobar.” … As the frequency increases, the directionality of the microphone pickup pattern becomes much tighter.
Is a shotgun mic omnidirectional?
The shotgun mic is like a laser, narrowly focused on one spot.” An omnidirectional mic picks up sounds from all directions equally, so you need to hold it close to your subject if there are competing background sounds. The shotgun mic focuses wherever it is pointed with a narrow and long beam.
What pattern should my mic be on?
Cardioid and its variations are known as ‘directional’ patterns because they can be pointed in the direction of sound sources. The traditional cardioid pattern is perfect for a solo presenter talking into a mic. It’s the most common microphone polar pattern you’re likely to find in your search for a mic.
What are the three basic polar patterns?
A Beginner’s Introduction to Microphone Polar Patterns
- Cardioid, Omnidirectional, and Figure-8.
- The 3 basic patterns are:
- Here’s what happens:
- For example:
- The two BIGGEST ones being:
- Supercardioid and hypercardioid patterns, while essential for filmmakers, are not commonly used in the recording studio.
What are the different types of polar patterns?
A polar pattern graph shows the variation in sensitivity as you move 360 degrees around the microphone. There are a number of different directional patterns available. The three most common patterns are omnidirectional, unidirectional, and bidirectional. Omnidirectional microphones have equal response at all angles.
Which polar pattern is best for vocals?
The most commonly used polar pattern for recording vocals is cardioid, which is more sensitive to sound arriving from the front of the mic than the back. Cardioid mics have the advantage of reducing ambient noise; however, they will also colour the sound more than an omni-directional design.
What is the 3 to 1 rule when dealing with microphones?
This rule deals with minimizing the audible phasing problems when summing several microphones to mono. The rule states that the source-to-microphone distance of numerous microphones should be three times the distance between the sound source and the nearest microphone.
How far can a shotgun mic work?
The most expensive shotgun mics can only capture audio from a distance of six to ten feet, while more affordable mics sound their best at a distance of three to four feet away. Interviews are typically shot from about seven to ten feet away from the subject.
When would you use a shotgun mic?
Common uses of shotgun microphones are for talks or speeches in meetings, conferences, and lectures. In scenarios such as these, the speaker does not need to hold a microphone and speak into it or wire a microphone on his body in order to record his speech or lecture.
What is figure 8 mic pattern?
A microphone with a Figure-8 or bidirectional pickup pattern is sensitive to sound coming from the front and coming from the rear, but has a very high rejection for sound coming from the sides. … Figure-8 happens to be the natural pattern of ribbon microphones, and most multipattern condensers can be set to figure-8.
How does a mic work?
A microphone converts sound into a small electrical current. Sound waves hit a diaphragm that vibrates, moving a magnet near a coil. … In a condenser microphone, the incoming sound vibrates one plate of a capacitor. The varying capacitance is converted into a corresponding electrical signal.
How do I set up my cardioid mic?
How to Use a Condenser Microphone
- Ensure that your microphone software has been properly installed on your computer. …
- Set your microphone close to your computer. …
- Set the microphone’s pattern switch to Cardioid. …
- Connect the headphones to the microphone by plugging the cable into the output marked Phones.