Microphone - an electroacoustic device, the main features of which are the amplification and recording.
It is important to understand that the technical characteristicsdifferent microphones will differ depending on the field of use of the device. Therefore, it should first determine what exactly you need one.
Based on this you can choose the most suitable model of the microphone.
Types of microphones
The most popular types of microphoneThey are dynamic and condenser. The advantage of the first type is that it does not require an external power supply, in addition to its structure is quite simple. The principle of operation is based on the movement of the membrane, which are then passed through a magnetic field passing current lead.
Dynamic view of the microphone is often used toconcerts and live performances. It is used in recording studios. There are also models of these microphones that are specifically designed for special tools - for example, for a variety of drums.
Action condenser microphone is based onChange the condensate tank, which is located between the plates, which sound affects. For this type of device requires an external power source. These microphones are best suited for studio work (for the record), because they transmit sound more efficiently and cleanly.
However, they are very sensitive to externalconditions - humidity, ambient temperature, distance to the sound source, as well as other sounds. Because of this feature is excluded their use in "field" conditions. However, there are models of this type, which may be used during live performances, for example, choral singing. Condenser microphones need to be installed on a special bracket.
Selecting the microphone: technical specifications
To choose the right microphone, you need to understand its technical characteristics, or at least have an idea about them. On the audio quality is influenced by:
- sensitivity of
- Frequency range
- Sound pressure level.
directional indicator characterizes,how well the microphone can perceive sounds that impact on it from different sides. There are non-directional microphone, bidirectional, hypercardioid, cardioid.
For example, if the microphone is omnidirectional, itwill perceive all the sounds from which side they come from. But it is not always convenient. Thus, when recording an interview on the street is better suited unidirectional microphone - model "gun."
The sensitivity level indicateshow quiet the sound is able to determine your microphone. It should be noted that the condenser type devices are more sensitive. However, it is not always justified, for example, for recording speech in noisy environments or outdoors. Due to the high rate of sensitivity in non-directional microphone recording will be "contaminated" by various third-party sounds.
The wider the range of frequencies at the microphone, thebetter the device will transmit the sounds. Sound pressure level indicates which force is capable of transmitting sound microphone, without distorting it. High rate is 130-140 dB. This is important if you want to use the device to send loud sounds - for example, a drum roll.
How to choose the microphone: Recommendations
In addition to the above technicalcharacteristics, there are other - compactness, weight, length of cable, etc., are not particularly affect the sound, but make use of electro-acoustic device more comfortable.
According to their purpose microphones are:
- Hidden, which are attached to musical instruments, etc.
When choosing a microphone should also be remembered thatit must be made of quality materials. Before you purchase the device, read the forums for feedback on the model you like and its manufacturer.
If you select a microphone for karaoke, apartthese characteristics pay attention to the length of the cable unit and its connector. Also remember that you need a hand microphone. The rest can be based on their preferences and budget.