How to Use Lavalier Microphone for Interview Video
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Sensitivity is an important indicator of the microphone's acoustoelectric conversion efficiency. It means that in a free sound field, the microphone output frequency is measured at a constant sound pressure of 1 kHz and in the positive direction of the sound source (that is, when the sound entrance angle is zero). The unit is mV / P. 1Pa = 10bar1ubar roughly equivalent to the normal human voice volume, measured at 1m distance sound pressure.
Dynamic microphone sensitivity of about 1.5 ~ 4 mV / Pa, while the capacitive microphone sensitivity than the moving coil type about 10 times, about 20 mV / Pa.
Microphone sensitivity is also useful decibel (db) said the provisions of 1 volt, Pa is 0db. As the sensitivity is much smaller than 1 V / P, so the sensitivity is a db.
BY-F8OD Professional omni directional lavalier video/instrument microphone
Boya BY-F8OD is a professional omni-directioanl Condenser lavalier video/instrument microphone, which not only perform well in video recording, but also works good for music recording. The frequency response favors the mid-range frequencies of group performance while minimizing noise registering at high and low frequencies. Omni directional pattern helps to pickup of sounds from all directions, make sure all sound clear and no details missed.
Microphone use different occasions, requiring the frequency response range and non-uniformity range is also different.
Dynamic microphone often do not take a flat frequency response curve, while in the high frequency (3 ~ 5KHz) a slight increase, which can increase pickup brightness and clarity. Generally speaking from the sound source is very close when used, there will be low-frequency boost phenomenon known as "talk about effect", so in the low frequency band below 150Hz is best to have obvious attenuation.
wireless microphone
Shotgun microphone system
Stereo microphone system
Lavalier microphone
ENG/broadcast microphone
Conference microphone system
BY-MC2 Conference Microphone
BY-WM4 Wireless Microphone
BY-MM1 Cardioid Microphone
How to use lavalier microphone
Live live concert, is very concerned about the radio quality. A singer on the stage to use the microphone to reproduce the wonderful voice of the song, you must first learn to take the right microphone position. Although the stage to take the microphone strange, some do not have to sing on the mouth, take the microphone position do not have to pay attention to, but to incorrect use of posture, will greatly affect the sound effects of the microphone.
Before buying a microphone, it is necessary to make it clear that it will do the job you want it to do. This means you have to figure out where the microphone is designed to work.
No microphone can meet all the applications. Different pickup points, the maximum sound pressure level affordability, background noise are all factors that need to be considered in the selection process. Each microphone has its own main applications, sometimes in the relevant applications are selected.
The BOYA BY-M4C is a lavalier microphone with cardioid polar pattern, which yields a generous pickup area while maintaining adequate feedback and noise rejection at the off-axis section of the capsule.
One of the main goals of live pickup microphone is resolution, followed by good off-axis response tones (sounds picked up from the side and tail of the handset). If the volume of the return and instrumentation speakers is less controllable on the stage, it may be possible to achieve good clarity and sharpness with fewer single-directional microphone.
Do not test a single microphone alone. Just by contrast, you can easily hear the difference between two microphones.
People generally remember the acoustic properties of only a few seconds. You can not remember the specific features of a microphone that was tested last week and you have to make an A / B comparison switch. You can use your familiar microphone, with the microphone you want to buy contrast.
Shotgun microphone system
Stereo microphone system
Lavalier microphone
BY-M4C Lavalier Microphone
BY-M4OD Lavalier Microphone
BY-LM300 Dual-Lavalier Microphone
ENG/broadcast microphone
Conference microphone system
BY-MC2 Conference Microphone
Smartphone microphone
BY-WM4 Wireless Microphone
How to Choose your microphone shock mount
It is important to choose a shock mount for your microphone that uses elastic vibration isolation to further reduce the effects of external vibrations and to reduce the mechanical vibrations transmitted vertically and laterally. Sensitive microphones, the vibration in the space are quite keen, shock isolation can effectively isolate the vibration, so that the high frequency can be more transparent, the sound is relatively calm.
The microphone is too close
Sometimes I want to be able to reduce the noise from the vocalist by a little bit. The fact is that not only the noise but also the noise comes in, which also leads to the Proximity Effect. The proximity effect uses the distance between the sound source and the microphone to create an extra low frequency and volume. Low-frequency enhancement will make the high-frequency is obscured the output of the speaker turbidity, if this is not what you want the effect should be avoided.
BY-M11C Professional Cardioid XLR Lavalier Microphone System
BOYA BY-M11C is a cardioid condenser lavalier microphone system designed for interview, documentary, film, theater, and stage applications.
Listen to your ideal distance with your ears
When collecting instruments may wish to listen with your own ears, play your experimental spirit to try different distances to hear the ideal effect you want to receive. Like the hole in the guitar ring where the radio, etc., can first use your own ears to listen to adjust and then use the microphone to fine tune.
A singer on the stage to use the microphone to reproduce the wonderful voice of the song, you must first learn to take the right microphone position.
Microphone characteristics
Dan field gas
Dantian gas shortage, the microphone can not be too far away from the mouth, and if the speaker volume again open large, so easily lead to feedback sound; sore throat singer, the microphone is not too close to the mouth, it will easily transition saturation distortion .
BOYA wireless microphone
Shotgun microphone system
Stereo microphone system
Lavalier microphone
BY-M8C Lavalier Microphone
BY-M8OD Lavalier Microphone
BY-LM300 Dual-Lavalier Microphone
ENG/broadcast microphone
BY-HM100 Dynamic Handheld Microphone
Conference microphone system
BY-MC2 Conference Microphone
How to Use a Lavalier Microphone When Shooting a Video
Many of my friends have Lavalier microphone in their hands and, as such, they often have a headache for Lavalier. Headache is mainly concentrated in the use of Lavalier microphone, the volume can not push up, push a little bigger, it is prone to howling. If you use the equalizer pull whistling, pulled not howling, and the sound of the microphone can not listen, thin and loose hair again.
Why is there such a situation? First of all, microphone whistling is an important reason, that is, the microphone can receive the sound emitted by the speaker. As long as the microphone can receive the sound emitted by the speakers, the path of positive feedback is established. As long as there is a positive feedback path, as long as the sound emitted by the loudspeaker to a certain extent, positive feedback that is howling will happen.
See here, many of my friends will ask: Why Lavalier microphone on the stage, behind the speaker, but also did not open the audiophile, or prone to howling?
First of all, the sound emitted by the speakers has high, medium and low frequency, the higher the frequency of sound transmission direction, while the lower the frequency of sound direction is poor, less than 250 Hz sound can basically be said that there is no transmission of the direction. Then, although the microphone is on the stage behind the speaker, the sound of the lower frequency emitted by the speaker still radiates to the stage and is received by the microphone.
BY-M1 Omni Directional Lavalier Microphone
BOYA BY-M1 is an omni directional lavalier microphone, perfect for video use, designed for Smartphones, DSLR, Camcorders ,Audio recorders, PC etc. The lavalier microphone features an Omni pickup pattern, for full, 360-degree coverage. An integrated 6-meter (20”) cable with 3.5mm 4-pole gold plug, can connect directly to Smartphones, most of cameras.
So why is the Lavalier microphone whizzing more easily than the moving microphone? Have you ever noticed the directivity of your Lavalier microphone while using the Lavalier microphone? I believe many people have not noticed this problem. Lavalier microphone mic orientation is also sub-omnidirectional, heart-shaped, super heart-shaped type, if you buy the hand is omnidirectional microphone, then can only say that this is a tragedy! Howling will always be with you! Are you using a cardioid microphone? Have you noticed the corresponding direction of the microphone head when wearing the microphone for the actor? Did you point the actor's mouth? Or did you give the microphone to the actor himself? Under the circumstances, if worn in the wrong direction, then the same, howling is still inevitable.
Wireless microphone
Shotgun microphone system
Stereo microphone system
Lavalier microphone
BY-M8OD Lavalier Microphone
ENG/broadcast microphone
Conference microphone system
Smartphone microphone
How does a wireless microphone work?
Wireless microphone, consists of transmitting and receiving. Among them, the launch part of the battery-powered microphone to convert sound to audio signals, after the internal circuit processing, audio information can be radio waves emitted to the surrounding space.
The receiving part is usually powered by the power supply, the receiving antenna receives the radio wave transmitted by the transmitting part first, then processes the internal circuit to extract the audio signal and then transmits it to the sound amplification system through the output signal line to complete the wireless transmission.
Understand the working principle of Wireless microphone, here to talk about the wireless microphone when you need to pay attention to what issues.
First, pay attention to impedance matching
The output impedance of the Wireless microphone, which is the same as the input impedance of the amplifier, is the best match. If the mismatch ratio exceeds 3: 1, it will have an impact on the audio transmission effect, although it can also be used, but the high and low frequency sound will have a significant loss.
Second, pay attention to working distance and near effect
In the hand-held Wireless microphone speech or singing, the working distance between the microphone and the mouth is generally more appropriate in 750px-1000px, too far away will increase the reverberation, too close to the signal will be too strong lead to audio distortion, affecting clarity, which Is the "talk about the effect of", when the distance broadcast, low frequency sound will be significantly improved.
BY-WM8 Dual Channel UHF Wireless Microphone System
The BOYA BY-WM8 Dual-Channel UHF wireless system is a portable, camera-mountable wireless system for capturing audio with dual subjects. It can be used in several environments for video, field recording, interview, broadcast TV, and ENG applications.
Wireless microphone has a certain effective angle, usually, the sound source should be aligned with the center line of the microphone, because the greater the deviation angle, the greater the loss of effect.
Fourth, pay attention to wireless wheat placement and height
Sometimes we hear sharp, harsh sounds when we turn on the microphone, which is fine because the microphone and the speaker are placed too close together.
When using a microphone stand, the height of the Wireless microphone should be as high as the performer's mouth to avoid over- or under-impact of the radio effect.
BY-WM6 UHF Wireless Microphone System
Shotgun microphone system
BY-VM600 Shotgun Microphone
Stereo microphone system
Lavalier microphone
BY-F8C Professional cardioid lavalier video /instrument microphone
BY-M4C Lavalier Microphone
ENG/broadcast microphone
Conference microphone system
The Top Best Wireless Microphone on Earth | boya-mic.com
Wireless microphone performance often affected by the frequency of peripheral equipment interference, improper operation of the user and other factors affect the emergence of a variety of failures, next, Palm Xiao Bian will teach you how to avoid and prevent the most common wireless microphone problem
The entire system is not compatible
There is a different degree of compatibility between frequencies, and if you are well aware of your system's condition, you can use more systems more aggressively, but the point is how to weigh the compatibility of your entire system. Most frequency-compatible software have an important assumption at design time that all receivers are always on or not mute (even if some transmitters are turned off occasionally) so that all receivers do not pick up To the possible noise intermodulation signal. As a result, the software needs to be designed with enough room for intermodulation signals and wireless microphone. If you assume that the sound system operator is to play a more active role in the activity, then the system needs a wider range of compatibility.
In this case, assume that the operator will silence all receivers and all transmitters will remain with the show. The transmitter and receiver antennas are also about the same distance, and these assumptions are perfectly fine for the Broadway Theater, but in school auditoriums the systems are operated by untrained personnel and not much in the way of achieving the same expected performance It is possible. When the transmitter is located very close to the receiving antenna, or high-power transmitter is running, the interference will be more serious. That's why it is far more difficult to have 40 wireless system in a movie theater than to work in schools (many transmitters are very close to the receiver), and there is a system in every classroom in the school, complete with transmitters Independent, but close to their own receiver.
BY-WM6R Wireless Bodypack Receiver
The BOYA BY-WM6R is a compact and rugged beltpack audio receiver, it work as Receiver A, compatible with BY-WXLR8, BY-WHM8, BY-WM6 transmitter and BY-WM8T( Transmitter sold separately).
When using wireless microphone, there is always interference between the system itself. Although each system has frequencies or intervals of several megahertz, Intermodulation Distortion (IMD) can still cause interference between microphones. If there is not enough space between the intermodulation signal and the device's operating frequency, it is difficult for the receiver to pick up the signal from the transmitter. Typical phenomena are crosstalk between systems, frequent signal loss or excessive noise and distortion. Small intervals between frequencies depend on the design of the system receiver, and entry level receivers may need to be separated by 1 MHz from the nearest neighbor. The more expensive receivers usually have narrower adjustment "windows" that allow for a smaller intermodulation frequency separation between each system.
BY-WM8R Dual-Channel Wireless Bodypack Receiver
BY-WHM8 UHF Wireless Handheld Transmitter
Shotgun microphone system
Stereo microphone system
BY-VM600 Shotgun Microphone
Stereo microphone system
Lavalier microphone
BY-LM400 Dual-Lavalier Microphone
ENG/broadcast microphone
Conference microphone system
Which is the best wireless microphone
Wireless microphone's history is not long, also a decade or two of history, but the development is extremely rapid. Eighties, we seldom see. Products nothing more than Newman, Siya and other international few microphone manufacturers; in the application, only to see a large concert abroad. Over time, brands such as Audio-Technica, Sennheiser, Sony and EV gradually entered the domestic high-end sound system.
With the development of electronic technology and the growing use of wireless microphone technology, market, applications have made great strides, the price is gradually approachable, all kinds of brands, various types of wireless microphone after another. Especially in recent years, domestic wireless microphone emergently in the middle and low-end market occupy half of the country. Enping Guangdong even appeared in the production of wireless microphone (microphone) distribution center.
Relatively speaking, wireless microphones are more expensive than wired microphones, which are more technically complicated and more delicate in use. Therefore, how to select and use a wireless microphone for this article is introduced.
Wireless microphone technology development
The wireless microphone has gone through about three stages from the very first simpler wireless FM transmitter and wireless FM receiver to the current dedicated PLL (frequency-locked loop) technology.
BY-WM5 Wireless Microphone
BOYA BY-WM5 wireless microphone is for use with DSLR cameras, camcorders. The 2.4 GHz GFSK system result in strong anti-interference, good security and stability.
1. Simple FM transmitter and receiver
At that time, in order to get rid of the fetters of the microphone cable, people came up with the principle of transmitting and receiving similar to FM radio. Through the microphone's transduction principle and audio → modulation → amplification → transmitting process, and then through the FM radio or special receiver ) Receive, playback. Can be imagined, its sound quality, stability, anti-interference ability, etc. can not meet the actual needs.
2. Quartz oscillation FM transmit and receive
Due to the RC or LC oscillation generated by the electronic circuit, the stability of the oscillation frequency is greatly affected by the environment and its frequency can not be very high. Generally, the oscillation frequency is generally lower than two or three hundred megahertz. In such a frequency band, Very susceptible to interference from other signals, this time there has been the use of quartz oscillator transmitting and receiving circuits. As we all know, quartz crystal oscillation frequency is very stable, composed of wireless microphone transmitter and receiver, work more stable, and its operating frequency can be V (30MHZ-250MHZ), U (200 -1000MHZ), the external interference signal is not serious, to the use of wireless microphone has brought better results.
