What is a shotgun microphone? How do they work?

　　Shotgun microphone
　　The purpose of using these devices is mainly to enhance the pickup capability in the axial direction, while attenuating side interference noise. In other words, let the microphone play its directivity as much as possible, in order to avoid unwanted noise and ambient sounds.
　　To do this, the system must block signals in unwanted directions and postpone the input of these signals. So its operating principle is based on the phase offset effect. First of all, the system has series interference tubes of different sizes, allowing the signals in the axial direction to arrive at the same time, and forcing the signal in the non-axial direction to reach the delay. The idea comes from Harry Olson, who has many inventions and also joined the current gun-type Mike's R & D team.

　　BY-VM01 Condenser Mini Microphone
　　The BOYA BY-VM01 mini Microphone is designed for recording audio while making videos, along with this mic your camera can create higher-quality audio. It designed for use with a digital SLR cameras and camcorder with a 3.5 mm (diameter) stereo mini-pin jack, and fits into compatible camera shoes, and connects to the camera via the 3.5mm mini-plug. Equipped with a cable stop which holds the cable in place to prevent noise from being recorded with accidental. Reduces vibration noise during autofocus
condenser microphone
The system itself has its limits. If you want to eliminate the low frequency, the size of the interference tube needs a little longer. Typical typical 30 cm (12 ") microphones behave like heart-shaped microphones below 1,413 Hz. If we want to be lower, the microphones will be larger and heavier.
　　On the other hand, the longer the microphone can be designed to make the pickup angle more narrow, so the more directivity of the microphone, more importantly, the correct axial arrangement. If we do not understand the axial direction, just as with a comb filter and a bad color scheme, the principle of phase cancellation will produce the same result. Too counterproductive, it is difficult to determine the microphone's position.

　　In an echoed space there will be diffuse, especially early reflections, the color of the signal part. Ideally, the microphone depends on the angle of the transform, if the sound is a correlated signal or just a noise. When both the signal and the noise are reflected on the nearby surface.

Wireless microphone
BY-WM4 Wireless Microphone
BY-WM5 Wireless Microphone
Shotgun microphone system
Stereo microphone system
Lavalier microphone
BY-M4C Lavalier Microphone
BY-M4OD Lavalier Microphone
ENG/broadcast microphone
Conference microphone system
BY-MC2 Conference Microphone

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