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The history of the development and maintenance of microphone
Publisher:Time:2015-1-29 13:36:15View:
The development of history
The microphone's history can be traced back to the end of the nineteenth Century, Baer (Alexander Graham Bell) and other scientists committed to finding a better way to pick up sound, for improved at the time of the latest invention -- the phone. During the period they invented liquid and carbon granule microphone microphone microphone, the effect is not ideal, just barely able to use.
On 1949, Whitney Webster Laboratory (the predecessor of Sennheiser) developed MD4 type microphone, it can effectively suppress acoustic feedback in a noisy environment, reduce the background noise. This is the world's first feedback inhibition and noise of microphone.
In 1961, Germany Hannover Messe, Sennheiser launched MK102 type and MK103 type microphone. These two microphone interpretation of a new microphone manufacturing idea -- RF RF capacitance, namely uses the vibration membrane is small and thin, has the advantages of small size, light weight characteristics, at the same time to ensure the excellent quality; in addition, the microphone is very sensitive to electromagnetic interference. Their impact on climate has very strong anti-jamming performance, very suitable for some new fields, for example, the expedition used in outdoor operation, day and night, in the face of great outdoor conditions, bad weather temperature difference, the microphone is still outstanding.
Maintain
A microphone is a multimedia classroom is a very important part, although it is simple to use, the price is relatively cheap, but its role play a decisive role. The microphone is one of equipment to use the highest frequency of multimedia equipment, if used improperly, it will reduce the life greatly, affect the normal use of multimedia classroom. The maintenance should pay attention to the following common sense:
1, the correct installation of line and the microphone connection and disassembly. The XLR plug (commonly known as chuck) plug in a microphone, rotating plug the notch buckle key with a microphone on the alignment, and then push the plug connection into the microphone, until the clip positioning of the keys; separate microphone with cable is connected, can hold the plug connection, press and hold the button pressing keys, and then pull out the plug from the microphone. Do not access and separate operations forced alignment or press the button in no case of bond.
2, the microphone "whistlers" in use, may be due to hand over the microphone microphone microphone head or too close to the cause, the answer is: reduce the volume first, away from the microphone distance, try to avoid the microphone and loudspeaker relative, then adjust to appropriate volume.
3, the microphone is a sound equipment with high sensitivity, must handle with care light, avoid dropping from a height. The impact may cause the microphone sensitivity and even damage.
4, not to the microphone blow or hand flapping its head to audition, audition method is right aligned the microphone to speak in a normal tone of voice.
5, the key to open the push-pull microphone should pay attention to moderate intensity, push and pull in place. If found in the use of a great noise, may be due to the push and pull open the key is not in place or a bad contact caused, the correct way is to push and pull switch. If the contact is not good, should be early repair.
6, the meeting with a microphone or wireless microphone is not used for a long time, should take out the battery, then install to use. In the process of use if there is sound of discontinuous, probably due to insufficient battery power, to replace the new battery in time.
7, when not in use, the microphone placed in dry and clean place, avoid storage and use in temperature, humidity is too high places, so as not to affect the sensitivity of the microphone and sound

 



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