Guide to Pick Earphones in the Technical Aspect

Today, headphone is more than just listening device and it also became a lot of young people to display themselves and demonstrate the necessary personal items. When choosing headphones, most people tend to start the procedure from appearances, as they consider headphones as the real carrier-outs with themselves after all. Along with the MP3 players enjoy an ever-growing popularity, the outlook of headphones attach much more importance.Inviting chinese buyer   are One of Greatest Mania of the Week

But today we start from the other side and the selection the headphones start with the technical aspects, and of course, here is the wireless headset. Learn Wonderful Ways to Regain cheap SanDisk SDHC TF Memory Card   from Halle Berry The mainstream technologies of wireless headphones entail Bluetooth, 2.4G and so on, with each one possessing both advantages and disadvantages. Let us elaborate on each of them.

Speaking of FM wireless technology, it might be one of the wireless technologies enjoying the most mature development, the widest applying range and the lowest cost up to now. Radio is the simplest FM wireless receiving apparatus. Some old-fashioned analog phones also used the letters FM wireless technology. Most of the wireless headset in market today, some wireless speakers and wireless microphones are used the FM technology in technical applications. From the point of view of Division of the radio spectrum, which the most common is 76MHz-108MHz while 800MHz U high segment is relatively rare with only Semester`s wireless headphones using this technology.

FM technology includes so many advantages which allow it to be disseminated widely. Firstly, it covers a quite long transmission distance, and plainer products can only achieve the distance of 20-30 metres. Second, FM can have"broadcast" connections, that is, a transmitter can match the number of receivers as long as adjusting to the same frequencies and are more suitable for simultaneous translation equipment. Last, FM technology has the powerful ability to penetrate, making it more than sufficient for common family users, and even if in front of an obstructive wall, it will surely go through.

As for the disadvantages, the most fatal drawback lies in its weak confidentiality. FM signals at the low wave band 76MHz-108MHz can be captured even by a radio. The high signal 800 MHz easily produce harmonic interference, which is one of the reasons why the current cordless phone is popular of 2.4G technology. In addition, FM wireless technology has generally poor sound quality limited by the transmission bandwidth, and the highest 22 KHz sampling rate is called "radio sound quality." Finally, FM wireless technology is venerable to be influenced and consequently turns up the frequency chaos, and something like that. Thus, the stability of FM is not very desirable.

On the basis of current situation, people may not get familiar and keep in contact with the technology of infrared wireless transmission, and most users can only get the acquisition of infrared functions, which has been integrated in previous smart mobile phones and weakened as snail-like running speed. Actually, the applying ranges of infrared wireless technology are not surpassed by FM wireless technology. For example, the common TV remote controller used in families best describes its superiority.

The infrared wireless remote control is the most applications on technology, and some of the early wireless mouse is also wireless transmission technology. As the mature development of infrared wireless technology, it is put into use in some solutions of higher-end audio products more often than before. A typical example would be Sennheisser`s digital infrared microphones.